type	title	url	description	referenced_by
documentation	2020 Data Breach Investigations Report	https://enterprise.verizon.com/resources/reports/dbir/		wwdc2021-10106
documentation	About continuous integration and delivery with Xcode Cloud	https://developer.apple.com/documentation/Xcode/About-Continuous-Integration-and-Delivery-with-Xcode-Cloud	Learn how continuous integration and delivery with Xcode Cloud helps you create high-quality apps and frameworks.	wwdc2021-10267
documentation	About focus interactions for Apple TV	https://developer.apple.com/documentation/UIKit/about-focus-interactions-for-apple-tv	Design and implement intuitive control schemes for menus and interactive user interface layouts.	wwdc2021-10260
documentation	Accelerate	https://developer.apple.com/documentation/Accelerate	Make large-scale mathematical computations and image calculations, optimized for high performance and low energy consumption.	wwdc2021-10233
samplecode	Accelerating ray tracing using Metal	https://developer.apple.com/documentation/metal/metal_sample_code_library/accelerating_ray_tracing_using_metal	Implement ray-traced rendering using GPU-based parallel processing.	wwdc2021-10286,wwdc2021-10150,wwdc2021-10149
documentation	Accessibility	https://developer.apple.com/documentation/swiftui/view-accessibility	Make your SwiftUI apps accessible to everyone, including people with disabilities.	wwdc2021-10119
samplecode	Accessibility design for Mac Catalyst	https://developer.apple.com/documentation/Accessibility/accessibility_design_for_mac_catalyst	Improve navigation in your app by using keyboard shortcuts and accessibility containers.	wwdc2021-10053
guide	Accessibility for Developers	https://developer.apple.com/accessibility/	Collection of Accessibility resources for macOS, iOS, watchOS, and tvOS.	wwdc2021-10120,wwdc2021-10121,wwdc2021-10223
documentation	accessibilityReduceMotion	https://developer.apple.com/documentation/SwiftUI/EnvironmentValues/accessibilityReduceMotion	Whether the system preference for Reduce Motion is enabled.	wwdc2021-10122
samplecode	Accessing a User’s Clinical Records	https://developer.apple.com/documentation/HealthKit/accessing-a-user-s-clinical-records	Request authorization to query HealthKit for a user’s clinical records and display them in your app.	wwdc2021-10089
documentation	Accessing and modifying per-device data	https://developer.apple.com/documentation/DeviceCheck/accessing-and-modifying-per-device-data	Use a token from your app to query and modify two per-device binary digits stored	wwdc2021-10244
samplecode	Accessing Data from a SMART Health Card	https://developer.apple.com/documentation/HealthKit/accessing-data-from-a-smart-health-card	Query for and validate a verifiable clinical record.	wwdc2021-10089
guide	Accessing Health Records	https://developer.apple.com/documentation/HealthKit/accessing-health-records	Read clinical record data from the HealthKit store.	wwdc2021-10089
documentation	Add rich graphics to your SwiftUI app	https://developer.apple.com/documentation/SwiftUI/add-rich-graphics-to-your-swiftui-app	Make your apps stand out by adding background materials, vibrancy, custom graphics, and animations.	wwdc2021-10021
samplecode	Adding an Apple Pay Button or a Custom Action in AR Quick Look	https://developer.apple.com/documentation/ARKit/adding-an-apple-pay-button-or-a-custom-action-in-ar-quick-look	Provide a banner that users can tap to make a purchase or perform a custom action in an AR experience.	wwdc2021-10078
samplecode	Adding hardware keyboard support to your app	https://developer.apple.com/documentation/UIKit/adding-hardware-keyboard-support-to-your-app	Enhance interactions with your app by handling raw keyboard events, writing custom keyboard shortcuts, and working with gesture recognizers.	wwdc2021-10057,wwdc2021-10260
documentation	Adding interactivity with gestures	https://developer.apple.com/documentation/SwiftUI/Adding-Interactivity-with-Gestures	Use gesture modifiers to add interactivity to your app.	wwdc2021-10021
samplecode	Adding menus and shortcuts to the menu bar and user interface	https://developer.apple.com/documentation/UIKit/adding-menus-and-shortcuts-to-the-menu-bar-and-user-interface	Provide quick access to useful actions by adding menus and keyboard shortcuts to your Mac app built with Mac Catalyst.	wwdc2021-10053,wwdc2021-10057,wwdc2021-10260
guide	Adding structure to your documentation pages	https://developer.apple.com/documentation/Xcode/adding-structure-to-your-documentation-pages	Make symbols easier to find by arranging them into groups and collections.	wwdc2021-10167
guide	Adding supplemental content to a documentation catalog	https://developer.apple.com/documentation/Xcode/adding-supplemental-content-to-a-documentation-catalog	Include articles and extension files to extend your source documentation comments or provide supporting conceptual content.	wwdc2021-10167
documentation	Adjusting your layout with keyboard layout guide	https://developer.apple.com/documentation/UIKit/adjusting-your-layout-with-keyboard-layout-guide	Respond dynamically to keyboard movement by using the tracking features of the keyboard layout guide.	wwdc2021-10260,wwdc2021-10259
download	Advanced Video Quality Tool	http://developer.apple.com/services-account/download?path=/Developer_Tools/Advanced_Video_Quality_Tool/AdvancedVideoQualityTool.dmg	The Advanced Video Quality Tool, or AVQT in short, is a macOS command line tool, which estimates perceptual video quality of compressed videos, that might contain video coding and scaling artifacts. The tool expects reference (source) and test (compressed) videos as inputs and outputs frame level and segment level scores of the test video on a scale of 1 to 5, where 1 indicates bad video quality and 5 indicates excellent video quality. You can also use AVQT to compute MSE (Mean Squared Error) and PSNR (Peak Signal to Noise Ratio) scores. Please see the enclosed README for more details.	wwdc2021-10145
documentation	Analyzing HTTP traffic with Instruments	https://developer.apple.com/documentation/Foundation/analyzing-http-traffic-with-instruments	Measure HTTP-based network performance and usage of your apps.	wwdc2021-10212
documentation	Analyzing the performance of your shipping app	https://developer.apple.com/documentation/Xcode/analyzing-the-performance-of-your-shipping-app	View power and performance metrics for apps you distribute through the App	wwdc2021-10087,wwdc2021-10180,wwdc2021-10181
documentation	App and Book Management	https://developer.apple.com/documentation/devicemanagement/app_and_book_management	Manage apps and books for your students and employees.	wwdc2021-10137
documentation	App Store Connect	https://developer.apple.com/app-store-connect/		wwdc2021-10171,wwdc2021-10295
documentation	App Store Connect API	https://developer.apple.com/documentation/AppStoreConnectAPI	The data structure that represents an app store connect api resource.	wwdc2021-10087,wwdc2021-10115,wwdc2021-10171,wwdc2021-10181
documentation	App Store Guidelines: User Privacy and Data Use	https://developer.apple.com/app-store/user-privacy-and-data-use/		wwdc2021-10085,wwdc2021-10033
documentation	App Store Server API	https://developer.apple.com/documentation/AppStoreServerAPI	Manage your customers’ App Store transactions from your server.	wwdc2021-10175,wwdc2021-10174,wwdc2021-10114
documentation	App Store Server Notifications	https://developer.apple.com/documentation/appstoreservernotifications	Monitor in-app purchase events in real time with server notifications from the App Store.	wwdc2021-10175,wwdc2021-10174,wwdc2021-10114
guide	App-Bound Domains Domain WebKit Blog Post	https://webkit.org/blog/10882/app-bound-domains/		wwdc2021-10032
documentation	Appearance Effects and Motion	https://developer.apple.com/design/human-interface-guidelines/accessibility/overview/appearance-effects/		wwdc2021-10122
documentation	AppKit	https://developer.apple.com/documentation/AppKit	Construct and manage a graphical, event-driven user interface for your macOS app.	wwdc2021-10054
guide	Apple Business Manager User Guide	https://support.apple.com/guide/apple-business-manager/	Apple Business Manager User Guide	wwdc2021-10137
guide	Apple Configurator 2 User Guide	https://support.apple.com/guide/apple-configurator-2/	Apple Configurator 2 User Guide	wwdc2021-10297
documentation	Apple Pay on the Web	https://developer.apple.com/documentation/apple_pay_on_the_web	Support Apple Pay on your website with JavaScript-based APIs.	wwdc2021-10092
guide	Apple Pay on the Web Interactive Demo	https://applepaydemo.apple.com	Try configuring an Apple Pay JS button and then making a test transaction.	wwdc2021-10092
documentation	Apple Platform Deployment	https://support.apple.com/guide/deployment/		wwdc2021-10129,wwdc2021-10136,wwdc2021-10130
documentation	Apple Platform Security	https://support.apple.com/guide/security/welcome/web		wwdc2021-10105
documentation	Apple School Manager User Guide	https://support.apple.com/guide/apple-school-manager/	Apple School Manager User Guide	wwdc2021-10137
guide	Apple Style Guide: Writing Inclusively	https://help.apple.com/applestyleguide/#/apdcb2a65d68		wwdc2021-10275
documentation	AppleSeed	https://appleseed.apple.com/		wwdc2021-10129,wwdc2021-10130
documentation	appleWalkingSteadiness	https://developer.apple.com/documentation/HealthKit/HKQuantityTypeIdentifier/appleWalkingSteadiness	A quantity sample type that measures the steadiness of the user’s gait.	wwdc2021-10287
documentation	appleWalkingSteadinessEvent	https://developer.apple.com/documentation/HealthKit/HKCategoryTypeIdentifier/appleWalkingSteadinessEvent	A category sample type that records an incident where the user showed a reduced score for their gait’s steadiness.	wwdc2021-10287
documentation	Applying Matte Effects to People in Images and Video	https://developer.apple.com/documentation/Vision/applying-matte-effects-to-people-in-images-and-video	Generate image masks for people automatically by using semantic person-segmentation.	wwdc2021-10040
documentation	Applying realistic material and lighting effects to entities	https://developer.apple.com/documentation/RealityKit/applying-realistic-material-and-lighting-effects-to-entities	Enhance the appearance of objects in a RealityKit scene with Physically Based Rendering	wwdc2021-10286,wwdc2021-10150,wwdc2021-10149,wwdc2021-10074
download	AR Quick Look Gallery	https://developer.apple.com/arkit/gallery	AR Quick Look Gallery Page	wwdc2021-10078
guide	ARC - The Swift Programming Language	https://docs.swift.org/swift-book/LanguageGuide/AutomaticReferenceCounting.html		wwdc2021-10216
documentation	ARKit	https://developer.apple.com/documentation/ARKit	Integrate hardware sensing features to produce augmented reality apps and games.	wwdc2021-10078,wwdc2021-10073
documentation	Assessing fraud risk	https://developer.apple.com/documentation/DeviceCheck/assessing-fraud-risk	Request and analyze risk data using server-to-server calls.	wwdc2021-10244
documentation	ASWF USD Working Group	https://wiki.aswf.io/display/WGUSD/USD+Working+Group	ASWF USD Working Group	wwdc2021-10077
documentation	AsyncImage	https://developer.apple.com/documentation/SwiftUI/AsyncImage	A view that asynchronously loads and displays an image.	wwdc2021-10019
guide	Attributes - The Swift Programming Language	https://docs.swift.org/swift-book/ReferenceManual/Attributes.html		wwdc2021-10253
documentation	Audio graphs	https://developer.apple.com/documentation/Accessibility/audio-graphs	Define an accessible representation of your chart for VoiceOver to generate an audio	wwdc2021-10122
documentation	Auto-renewable subscriptions overview	https://developer.apple.com/app-store/subscriptions/	Auto-Renewable Subscriptions	wwdc2021-10175,wwdc2021-10174
documentation	Automating CloudKit Development	https://developer.apple.com/icloud/cloudkit/automating/	This document describes CloudKit tools and authentication considerations for automating processes to support local integration testing and continuous integration (CI) systems.	wwdc2021-10118
documentation	AVFoundation	https://developer.apple.com/documentation/AVFoundation	Work with audiovisual assets, control device cameras, process audio, and configure system audio interactions.	wwdc2021-10146,wwdc2021-10103
documentation	AVKit	https://developer.apple.com/documentation/AVKit	Create user interfaces for media playback, complete with transport controls, chapter navigation, picture-in-picture support, and display of subtitles and closed captions.	wwdc2021-10290,wwdc2021-10191
documentation	Background execution	https://developer.apple.com/documentation/WatchKit/background-execution	Manage background sessions and tasks.	wwdc2021-10005
documentation	Beta Testing Made Simple	https://developer.apple.com/testflight/	Beta Testing Made Simple	wwdc2021-10170
documentation	Bring an iPad App to the Mac with Mac Catalyst	https://developer.apple.com/tutorials/Mac-Catalyst		wwdc2021-10053,wwdc2021-10052
samplecode	Build a workout app for Apple Watch	https://developer.apple.com/documentation/HealthKit/build-a-workout-app-for-apple-watch	Create your own workout app, quickly and easily, with HealthKit and SwiftUI.	wwdc2021-10009
samplecode	Build Mail App Extensions	https://developer.apple.com/documentation/MailKit/build-mail-app-extensions	Create app extensions that block content, perform message and composing actions, and help message security.	wwdc2021-10168
samplecode	Building a Custom Catalog and Matching Audio	https://developer.apple.com/documentation/ShazamKit/building-a-custom-catalog-and-matching-audio	Display lesson content that’s synchronized to a learning video by matching the audio to a custom reference signature and associated metadata.	wwdc2021-10045
samplecode	Building a great Mac app with SwiftUI	https://developer.apple.com/documentation/SwiftUI/building-a-great-mac-app-with-swiftui	Create engaging SwiftUI Mac apps by incorporating side bars, tables, toolbars, and several other popular user interface elements.	wwdc2021-10289,wwdc2021-10062
samplecode	Building an immersive experience with RealityKit	https://developer.apple.com/documentation/RealityKit/building-an-immersive-experience-with-realitykit	Use systems and postprocessing effects to create a realistic underwater scene.	wwdc2021-10075,wwdc2021-10074
guide	Building an Interactive Tutorial	https://developer.apple.com/documentation/docc	Construct a step-by-step guided learning experience for your app, framework, or package.	wwdc2021-10235
samplecode	Building and improving your app with Mac Catalyst	https://developer.apple.com/documentation/UIKit/building-and-improving-your-app-with-mac-catalyst	Improve your iPadOS app with Mac Catalyst by supporting native controls, multiple windows, sharing, printing, menus and keyboard shortcuts.	wwdc2021-10053,wwdc2021-10056,wwdc2021-10052
samplecode	Building high-performance lists and collection views	https://developer.apple.com/documentation/UIKit/building-high-performance-lists-and-collection-views	Improve the performance of lists and collections in your app with prefetching and image preparation.	wwdc2021-10252
documentation	Capture setup	https://developer.apple.com/documentation/AVFoundation/capture-setup	Configure built-in cameras and microphones, and external capture devices, for media capture.	wwdc2021-10047,wwdc2021-10247,wwdc2021-10160
samplecode	Capturing photographs for RealityKit Object Capture	https://developer.apple.com/documentation/RealityKit/capturing-photographs-for-realitykit-object-capture	Take high-quality images of objects to generate 3D models.	wwdc2021-10076
guide	Capturing photographs for RealityKit Object Capture	https://developer.apple.com/documentation/RealityKit/capturing-photographs-for-realitykit-object-capture	Take high-quality images of objects to generate 3D models.	wwdc2021-10076
documentation	Capturing photos in RAW and Apple ProRAW formats	https://developer.apple.com/documentation/AVFoundation/capturing-photos-in-raw-and-apple-proraw-formats	Support professional photography workflows by enabling minimally processed image capture in your camera app.	wwdc2021-10160
documentation	Capturing still and Live Photos	https://developer.apple.com/documentation/AVFoundation/capturing-still-and-live-photos	Configure and capture single or multiple still images, Live Photos, and other forms of photography.	wwdc2021-10160
samplecode	Classifying Live Audio Input with a Built-in Sound Classifier	https://developer.apple.com/documentation/SoundAnalysis/classifying-live-audio-input-with-a-built-in-sound-classifier	Detect and identify hundreds of sounds by using a trained classifier.	wwdc2021-10036
documentation	ClassKit	https://developer.apple.com/documentation/ClassKit	Enable teachers to assign activities from your app’s content and to view student progress.	wwdc2021-10257
documentation	CloudKit	https://developer.apple.com/documentation/CloudKit	Store structured app and user data in iCloud containers that all users of your app can share.	wwdc2021-10117,wwdc2021-10118,wwdc2021-10086
samplecode	CloudKit Samples: Encryption	https://github.com/apple/cloudkit-sample-encryption	This project demonstrates using encrypted values with CloudKit and iCloud containers.	wwdc2021-10086
samplecode	CloudKit Samples: Private Database	https://github.com/apple/cloudkit-sample-privatedb	This buildable (and testable) Xcode project demonstrates a simple use of the CloudKit Private Database.	wwdc2021-10086
documentation	CMFallDetectionManager	https://developer.apple.com/documentation/CoreMotion/CMFallDetectionManager	An object for managing fall detection events.	wwdc2021-10287
documentation	Collection	https://developer.apple.com/documentation/Swift/Collection	A sequence whose elements can be traversed multiple times,	wwdc2021-10256
documentation	Color and Contrast	https://developer.apple.com/design/human-interface-guidelines/accessibility/overview/color-and-contrast/		wwdc2021-10122
documentation	Composing SwiftUI gestures	https://developer.apple.com/documentation/SwiftUI/Composing-SwiftUI-Gestures	Combine gestures to create complex interactions.	wwdc2021-10021
documentation	Configuring start conditions	https://developer.apple.com/documentation/Xcode/Configuring-Start-Conditions	Configure Xcode Cloud to start a build when you update a branch, pull request, or Git tag, or based on a schedule.	wwdc2021-10269
documentation	Configuring webhooks in Xcode Cloud	https://developer.apple.com/documentation/Xcode/Configuring-Webhooks-in-Xcode-Cloud	Configure webhooks that connect Xcode Cloud to other services and tools.	wwdc2021-10269
documentation	Configuring your first Xcode Cloud workflow	https://developer.apple.com/documentation/Xcode/Configuring-Your-First-Xcode-Cloud-Workflow	Set up your project or workspace to use Xcode Cloud and adopt continuous integration and delivery.	wwdc2021-10268,wwdc2021-10267
documentation	Configuring your Xcode Cloud workflow’s actions	https://developer.apple.com/documentation/Xcode/Configuring-Your-Xcode-Cloud-Workflow-s-Actions	Add actions to an Xcode Cloud workflow to build, test, analyze, and archive your app or framework when it performs a build.	wwdc2021-10269
samplecode	Connecting to a service with passkeys	https://developer.apple.com/documentation/AuthenticationServices/connecting-to-a-service-with-passkeys	Allow users to sign in to a service without typing a password.	wwdc2021-10106
documentation	Core Audio	https://developer.apple.com/documentation/CoreAudio	Use the Core Audio framework to interact with device’s audio hardware.	wwdc2021-10265
documentation	Core Bluetooth	https://developer.apple.com/documentation/CoreBluetooth	Communicate with Bluetooth low energy and BR/EDR (“Classic”) Devices.	wwdc2021-10005
documentation	Core Haptics	https://developer.apple.com/documentation/CoreHaptics	Compose and play haptic patterns to customize your iOS app’s haptic feedback.	wwdc2021-10278
documentation	Core Image	https://developer.apple.com/documentation/CoreImage	Use built-in or custom filters to process still and video images.	wwdc2021-10159,wwdc2021-10160
documentation	Core Location	https://developer.apple.com/documentation/CoreLocation	Obtain the geographic location and orientation of a device.	wwdc2021-10102
documentation	Core ML	https://developer.apple.com/documentation/CoreML	Integrate machine learning models into your app.	wwdc2021-10038
documentation	Core ML Converters	https://coremltools.readme.io/docs	Reference documentation on coremltools including Core ML Converters	wwdc2021-10038
documentation	Core Motion	https://developer.apple.com/documentation/CoreMotion	Process accelerometer, gyroscope, pedometer, and environment-related events.	wwdc2021-10287
documentation	CoreLocationUI	https://developer.apple.com/documentation/CoreLocationUI	Streamline access to users’ location data through a standard, secure UI.	wwdc2021-10102
samplecode	Create accessible experiences for watchOS	https://developer.apple.com/documentation/watchOS-Apps/create-accessible-experiences-for-watchos	Learn how to make your watchOS app more accessible.	wwdc2021-10223
documentation	Create ML	https://developer.apple.com/documentation/CreateML	Create machine learning models for use in your app.	wwdc2021-10037,wwdc2021-10039
guide	Creating 3D objects from photographs	https://developer.apple.com/documentation/RealityKit/creating-3d-objects-from-photographs	Construct virtual objects to use in your AR experiences.	wwdc2021-10076
samplecode	Creating a fog effect using scene depth	https://developer.apple.com/documentation/ARKit/creating-a-fog-effect-using-scene-depth	Apply virtual fog to the physical environment.	wwdc2021-10075,wwdc2021-10074
samplecode	Creating a Metal dynamic library	https://developer.apple.com/documentation/Metal/creating-a-metal-dynamic-library	Compile a library of shaders and write it to a file as a dynamically linked library.	wwdc2021-10229
samplecode	Creating a photogrammetry command-line app	https://developer.apple.com/documentation/RealityKit/creating-a-photogrammetry-command-line-app	Generate 3D objects from images using RealityKit Object Capture.	wwdc2021-10076
samplecode	Creating accessible views	https://developer.apple.com/documentation/SwiftUI/creating-accessible-views	Make your app accessible to everyone by applying accessibility modifiers to your SwiftUI views.	wwdc2021-10119
samplecode	Creating an App for Face-Painting in AR	https://developer.apple.com/documentation/RealityKit/creating-an-app-for-face-painting-in-ar	Combine RealityKit’s face detection with PencilKit to implement virtual face-painting.	wwdc2021-10074
documentation	Creating recurring leaderboards	https://developer.apple.com/documentation/GameKit/creating-recurring-leaderboards	Create a leaderboard for your game that ranks player scores based on a schedule.	wwdc2021-10067
documentation	Creating your Product Page	https://developer.apple.com/app-store/product-page/	Help users find and engage with your app on the App Store through thoughtfully crafted app metadata.	wwdc2021-10295
samplecode	Customizing and resizing sheets in UIKit	https://developer.apple.com/documentation/UIKit/customizing-and-resizing-sheets-in-uikit	Discover how to create a layered and customized sheet experience in UIKit.	wwdc2021-10063
documentation	Customizing the tvOS Playback Experience	https://developer.apple.com/documentation/AVKit/customizing-the-tvos-playback-experience	Adopt the latest features of the redesigned tvOS player user interface to provide a more streamlined way to watch your content.	wwdc2021-10191
documentation	Debugging the shaders within a draw command or compute dispatch	https://developer.apple.com/documentation/Xcode/Debugging-the-shaders-within-a-draw-command-or-compute-dispatch	Identify and fix problematic shaders in your app using the shader debugger.	wwdc2021-10157,wwdc2021-10153,wwdc2021-10148
samplecode	Delivering Rich App Experiences with Haptics	https://developer.apple.com/documentation/CoreHaptics/delivering-rich-app-experiences-with-haptics	Enhance your app’s experience by incorporating haptic and sound feedback into key interactive moments.	wwdc2021-10278
guide	Designing your app for the Always On state	https://developer.apple.com/documentation/watchOS-Apps/designing-your-app-for-the-always-on-state	Customize your watchOS app’s user interface for continuous display.	wwdc2021-10002
documentation	Developing a workflow strategy for Xcode Cloud	https://developer.apple.com/documentation/Xcode/Developing-a-Workflow-Strategy-for-Xcode-Cloud	Review how you can best create custom Xcode Cloud workflows to refine your continuous integration and delivery practice.	wwdc2021-10268,wwdc2021-10269
documentation	Device Activity	https://developer.apple.com/documentation/DeviceActivity	Monitor device activity with your app extension while maintaining privacy.	wwdc2021-10123
guide	Device and Data Access when Personal Safety is At Risk	https://manuals.info.apple.com/MANUALS/1000/MA1976/en_US/device-and-data-access-when-personal-safety-is-at-risk.pdf	Apple makes it easy to connect and share your life with the people closest to you. What you share, and whom you share it with, is up to you — including the decision to make changes to better protect your information or personal safety.	wwdc2021-10110
documentation	Device Management	https://developer.apple.com/documentation/DeviceManagement	Manage your organization’s devices remotely.	wwdc2021-10131,wwdc2021-10130
documentation	Diagnosing issues using crash reports and device logs	https://developer.apple.com/documentation/Xcode/diagnosing-issues-using-crash-reports-and-device-logs	Use crash reports and device logs to debug app issues.	wwdc2021-10203
documentation	Dispatch	https://developer.apple.com/documentation/Dispatch	Execute code concurrently on multicore hardware by submitting work to dispatch queues managed by the system.	wwdc2021-10258
documentation	Dispatching intents to handlers	https://developer.apple.com/documentation/SiriKit/dispatching-intents-to-handlers	Provide SiriKit with an intent handler capable of handling a specific intent.	wwdc2021-10232
samplecode	Displaying a point cloud using scene depth	https://developer.apple.com/documentation/ARKit/displaying-a-point-cloud-using-scene-depth	Present a visualization of the physical environment by placing points based a scene’s depth data.	wwdc2021-10075
documentation	Displaying Apple Pay Buttons Using JavaScript	https://developer.apple.com/documentation/ApplePayontheWeb/displaying-apple-pay-buttons-using-javascript	Load and configure the JavaScript Apple Pay button.	wwdc2021-10092
documentation	Distributing and updating a pass	https://developer.apple.com/documentation/WalletPasses/distributing-and-updating-a-pass	Distribute a pass to your users or update an existing pass.	wwdc2021-10092
guide	Distributing documentation to other developers	https://developer.apple.com/documentation/Xcode/distributing-documentation-to-other-developers	Share your documentation directly with Xcode users or host it on a web server.	wwdc2021-10236
documentation	Diversity in Swift	https://swift.org/diversity/		wwdc2021-10192
documentation	DocC	https://developer.apple.com/documentation/docc	Produce rich API reference documentation and interactive tutorials for your app, framework, or package.	wwdc2021-10192,wwdc2021-10235
documentation	Documenting a Swift Framework or Package	https://www.swift.org/documentation/docc/documenting-a-swift-framework-or-package	Create developer documentation from in-source comments, add articles with code snippets, and add tutorials for a guided learning experience.	wwdc2021-10167,wwdc2021-10166
documentation	Donating Shortcuts	https://developer.apple.com/documentation/SiriKit/donating-shortcuts	Tell Siri about shortcuts to actions that the user performed in your app.	wwdc2021-10231
download	Download SF Symbols	https://developer.apple.com/sf-symbols/		wwdc2021-10288,wwdc2021-10097,wwdc2021-10251,wwdc2021-10349,wwdc2021-10250
documentation	Downloading files from websites	https://developer.apple.com/documentation/Foundation/downloading-files-from-websites	Download files directly to the filesystem.	wwdc2021-10003
documentation	Drawing content in a group session	https://developer.apple.com/documentation/groupactivities/drawing_content_in_a_group_session	Invite your friends to draw on a shared canvas while on a FaceTime call.	wwdc2021-10187
documentation	Edit and play back HDR video with AVFoundation	https://apple.co/3orEzXX	Link to AVFoundation documentation.	wwdc2021-10161
samplecode	Editing and playing HDR video	https://developer.apple.com/documentation/AVFoundation/editing-and-playing-hdr-video	Support high-dynamic-range (HDR) video content in your app by using the HDR editing and playback capabilities of AVFoundation.	wwdc2021-10161
samplecode	Encrypting and Decrypting Directories	https://developer.apple.com/documentation/AppleArchive/encrypting-and-decrypting-directories	Compress and encrypt the contents of an entire directory or decompress and decrypt an archived directory  using Apple Encrypted Archive.	wwdc2021-10233
samplecode	Enhancing your iPad app with pointer interactions	https://developer.apple.com/documentation/UIKit/enhancing-your-ipad-app-with-pointer-interactions	Provide a great user experience with pointing devices, by incorporating pointer content effects and shape customizations.	wwdc2021-10057
documentation	Environment variable reference	https://developer.apple.com/documentation/Xcode/Environment-Variable-Reference	Review predefined environment variables you use in custom build scripts.	wwdc2021-10269
documentation	Establishing your app’s integrity	https://developer.apple.com/documentation/DeviceCheck/establishing-your-app-s-integrity	Ensure that requests your server receives come from legitimate instances of your	wwdc2021-10244,wwdc2021-10110
guide	Expanding Your App to New Markets	https://developer.apple.com/localization/	Internationalization and Localization. Expanding Your App to New Markets.	wwdc2021-10220,wwdc2021-10221
documentation	Expected Failures	https://developer.apple.com/documentation/XCTest/expected-failures	Anticipate known test failures to prevent failing tests from affecting your workflows.	wwdc2021-10207
developerForum	Explore the ARKit Developer Forums	https://developer.apple.com/forums/tags/arkit		wwdc2021-10073
documentation	Explore the Human Interface Guidelines	https://developer.apple.com/design/human-interface-guidelines/		wwdc2021-10126
developerForum	Explore the RealityKit Developer Forums	https://developer.apple.com/forums/tags/realitykit		wwdc2021-10075,wwdc2021-10076,wwdc2021-10074
documentation	Export HDR media in your app using AVFoundation	https://apple.co/2NA4pft	Link to ACFoundation Documentation	wwdc2021-10161
documentation	Family Controls	https://developer.apple.com/documentation/FamilyControls	Authorize your app to provide parental controls on a device.	wwdc2021-10123
documentation	Feature your actions in the Shortcuts app	https://developer.apple.com/videos/play/wwdc2020/10084/		wwdc2021-10283
documentation	fetchActivity(for:completion:)	https://developer.apple.com/documentation/ClassKit/CLSDataStore/fetchActivity(for:completion:)	Fetches an activity for a given document so you can record progress on the associated task.	wwdc2021-10257
documentation	File Provider	https://developer.apple.com/documentation/FileProvider	An extension other apps use to access files and folders managed by your app and synced with a remote storage.	wwdc2021-10182
documentation	Finding multiple players for a game	https://developer.apple.com/documentation/GameKit/finding-multiple-players-for-a-game	Discover and invite other players to participate in a real-time game.	wwdc2021-10066
guide	Formatting your documentation	https://developer.apple.com/documentation/docc	Enhance your content’s presentation with special formatting and styling for text, links, and other page elements.	wwdc2021-10167,wwdc2021-10166
documentation	Foundation	https://developer.apple.com/documentation/Foundation	Access essential data types, collections, and operating-system services to define the base layer of functionality for your app.	wwdc2021-10109
samplecode	Fruta: Building a feature-rich app with SwiftUI	https://developer.apple.com/documentation/AppClip/fruta-building-a-feature-rich-app-with-swiftui	Create a shared codebase to build a multiplatform app that offers widgets and an App Clip.	wwdc2021-10220,wwdc2021-10253,wwdc2021-10012
documentation	Gain Insights with Analytics	https://developer.apple.com/app-store-connect/analytics/		wwdc2021-10115
documentation	Game Controller	https://developer.apple.com/documentation/GameController	Support hardware game controllers in your game.	wwdc2021-10081
documentation	GCVirtualController	https://developer.apple.com/documentation/GameController/GCVirtualController	A software emulation of a real controller that you configure specifically for your game.	wwdc2021-10081
documentation	GestureState	https://developer.apple.com/documentation/SwiftUI/GestureState	A property wrapper type that updates a property while the user performs a	wwdc2021-10021
documentation	Get Your Product Page Ready	https://developer.apple.com/app-store/product-page-updates/		wwdc2021-10295
documentation	Getting movement disorder symptom data	https://developer.apple.com/documentation/CoreMotion/getting-movement-disorder-symptom-data	Retrieve data from the Apple Watch’s movement disorder manager.	wwdc2021-10287
guide	Getting Started with HLS Interstitials	https://developer.apple.com/streaming/GettingStartedWithHLSInterstitials.pdf		wwdc2021-10140
documentation	GKLocalPlayer	https://developer.apple.com/documentation/GameKit/GKLocalPlayer	The local player who signs in to Game Center on the device running the game.	wwdc2021-10066
documentation	Group Activities	https://developer.apple.com/documentation/GroupActivities	Create app-specific activities your users can share and experience together.	wwdc2021-10189,wwdc2021-10183,wwdc2021-10225,wwdc2021-10187,wwdc2021-10184
documentation	HealthKit	https://developer.apple.com/documentation/HealthKit	Access and share health and fitness data while maintaining the user’s privacy and control.	wwdc2021-10069,wwdc2021-10282,wwdc2021-10068
documentation	HKAppleWalkingSteadinessClassification	https://developer.apple.com/documentation/HealthKit/HKAppleWalkingSteadinessClassification	A classification of a score based on the steadiness of the user’s gait.	wwdc2021-10287
documentation	HKVerifiableClinicalRecord	https://developer.apple.com/documentation/HealthKit/HKVerifiableClinicalRecord	A sample that represents the contents of a SMART Health Card or EU Digital COVID Certificate.	wwdc2021-10089
documentation	HKVerifiableClinicalRecordQuery	https://developer.apple.com/documentation/HealthKit/HKVerifiableClinicalRecordQuery	A query for one-time access to a SMART Health Card or EU Digital COVID Certificate.	wwdc2021-10089
guide	HLS Content Steering Specification	https://developer.apple.com/streaming/HLSContentSteeringSpecification.pdf		wwdc2021-10141
guide	HTTP Live Streaming - Overview	https://developer.apple.com/streaming/		wwdc2021-10143,wwdc2021-10141,wwdc2021-10142
documentation	Human Interface Guidelines: Accessing User Data	https://developer.apple.com/design/human-interface-guidelines/ios/app-architecture/accessing-user-data/	User privacy is paramount. To help people trust your app, it’s crucial to be transparent about the privacy-related data and resources you require and how you use them.	wwdc2021-10102,wwdc2021-10085
documentation	Human Interface Guidelines: App Clip Codes	https://developer.apple.com/design/human-interface-guidelines/app-clips/overview/app-clip-codes	Human Interface Guidelines: App Clip Codes	wwdc2021-10073
documentation	Human Interface Guidelines: Designing for iOS	https://developer.apple.com/design/Human-Interface-Guidelines/designing-for-ios	HIG	wwdc2021-10018
documentation	Human Interface Guidelines: Designing for tvOS	https://developer.apple.com/design/human-interface-guidelines/designing-for-tvos	HIG	wwdc2021-10191
documentation	Human Interface Guidelines: Game Center	https://developer.apple.com/design/human-interface-guidelines/game-center	HIG	wwdc2021-10067,wwdc2021-10066
documentation	Human Interface Guidelines: In-app purchase	https://developer.apple.com/design/human-interface-guidelines/in-app-purchase	HIG	wwdc2021-10175,wwdc2021-10174,wwdc2021-10114
documentation	Human Interface Guidelines: Inclusion	https://developer.apple.com/design/human-interface-guidelines/inclusion/	An inclusive app puts people first by prioritizing respectful communication and presenting content and functionality in ways that everyone can access and understand.	wwdc2021-10275,wwdc2021-10304
documentation	Human Interface Guidelines: Mac Catalyst	https://developer.apple.com/design/human-interface-guidelines/mac-catalyst	When you use Mac Catalyst to create a Mac version of your iPad app, you make your app available to a new audience while giving existing users the opportunity to enjoy it in a new environment.	wwdc2021-10053,wwdc2021-10052
documentation	Human Interface Guidelines: Nearby interactions	https://developer.apple.com/design/human-interface-guidelines/nearby-interactions	HIG	wwdc2021-10245
documentation	Human Interface Guidelines: Playing haptics	https://developer.apple.com/design/human-interface-guidelines/playing-haptics	HIG	wwdc2021-10278
documentation	Human Interface Guidelines: Pointing devices	https://developer.apple.com/design/human-interface-guidelines/pointing-devices	HIG	wwdc2021-10057
documentation	Human Interface Guidelines: SF Symbols	https://developer.apple.com/design/human-interface-guidelines/sf-symbols	HIG	wwdc2021-10288,wwdc2021-10097,wwdc2021-10251,wwdc2021-10349,wwdc2021-10250,wwdc2021-10054
documentation	Human Interface Guidelines: Siri	https://developer.apple.com/design/human-interface-guidelines/siri		wwdc2021-10283
samplecode	Implementing a store in your app using the StoreKit API	https://developer.apple.com/documentation/StoreKit/implementing-a-store-in-your-app-using-the-storekit-api	Offer In-App Purchases and manage entitlements using signed transactions and status information.	wwdc2021-10114
samplecode	Implementing Advanced Text Input Features	https://developer.apple.com/sample-code/wwdc/2017/Implementing-Advanced-Text-Input-Features.zip	Demonstrates how to implement many common user interface patterns surrounding the iOS keyboard, as well as how to create a custom keyboard extension.	wwdc2021-10260
documentation	Improving app responsiveness	https://developer.apple.com/documentation/Xcode/improving-app-responsiveness	Create a user experience that feels responsive by removing hangs and hitches from your app.	wwdc2021-10181
documentation	In-App Events	https://developer.apple.com/app-store/in-app-events/?cid=developer80		wwdc2021-10171
documentation	In-app purchase overview	https://developer.apple.com/in-app-purchase/		wwdc2021-10175,wwdc2021-10174,wwdc2021-10114
samplecode	Incorporating ClassKit into an Educational App	https://developer.apple.com/documentation/ClassKit/incorporating-classkit-into-an-educational-app	Walk through the process of setting up assignments and recording student progress.	wwdc2021-10257
documentation	Input and event modifiers	https://developer.apple.com/documentation/SwiftUI/View-Input-and-Events	Supply actions for a view to perform in response to user input and system events.	wwdc2021-10023
documentation	INSendMessageIntent	https://developer.apple.com/documentation/Intents/INSendMessageIntent	A request to send a message to the designated recipients.	wwdc2021-10091
documentation	INStartCallIntent	https://developer.apple.com/documentation/Intents/INStartCallIntent	A request to start an audio or video call with one or more users.	wwdc2021-10091
documentation	Integrating a Text-Based Schema into Your Workflow	https://developer.apple.com/documentation/CloudKit/integrating-a-text-based-schema-into-your-workflow	Define and update your schema with the CloudKit Schema Language.	wwdc2021-10118
samplecode	Interacting with App Clip Codes in AR	https://developer.apple.com/documentation/AppClip/interacting-with-app-clip-codes-in-ar	Display content and provide services in an AR experience with App Clip Codes.	wwdc2021-10073
samplecode	Interacting with Bluetooth peripherals during background app refresh	https://developer.apple.com/documentation/WatchKit/interacting-with-bluetooth-peripherals-during-background-app-refresh	Keep your complications up-to-date by reading values from a Bluetooth peripheral while your app is running in the background.	wwdc2021-10005
documentation	Interactive Tutorials	https://developer.apple.com/documentation/docc	Teach developers your Swift and Objective-C APIs through step-by-step, interactive content.	wwdc2021-10235
documentation	Introducing Private Click Measurement, PCM	https://webkit.org/blog/11529/introducing-private-click-measurement-pcm/	This blog post covers a new feature called Private Click Measurement, or PCM, for measuring ad clicks across websites and from iOS apps to websites. It is part of iOS and iPadOS 14.5.	wwdc2021-10085,wwdc2021-10059,wwdc2021-10033
documentation	Introducing SF Symbols	https://developer.apple.com/wwdc19/206		wwdc2021-10054
documentation	Introducing Storage Access API	https://webkit.org/blog/8124/introducing-storage-access-api/	Learn about Storage Access API and Intelligent Tracking Prevention.	wwdc2021-10030
documentation	Introducing StoreKit 2	https://developer.apple.com/storekit/		wwdc2021-10175,wwdc2021-10174,wwdc2021-10114
documentation	Introduction to Universal Scene Description (USD)	https://graphics.pixar.com/usd/docs/index.html	Introduction to Universal Scene Description (USD)	wwdc2021-10077
documentation	Introduction to WebKit Content Blockers	https://webkit.org/blog/3476/content-blockers-first-look/		wwdc2021-10168
documentation	isReduceMotionEnabled	https://developer.apple.com/documentation/UIKit/UIAccessibility/isReduceMotionEnabled	A Boolean value that indicates whether the Reduce Motion setting is in an enabled state.	wwdc2021-10122
documentation	JWS documentation (RFC 7515)	https://tools.ietf.org/html/rfc7515		wwdc2021-10114
documentation	Keeping a widget up to date	https://developer.apple.com/documentation/WidgetKit/Keeping-a-Widget-Up-To-Date	Plan your widget’s timeline to show timely, relevant information using	wwdc2021-10048
documentation	Keeping your complications up to date	https://developer.apple.com/documentation/ClockKit/keeping-your-complications-up-to-date	Replace or extend the data in your complication’s timeline.	wwdc2021-10003
guide	Keeping your watchOS content up to date	https://developer.apple.com/documentation/watchOS-Apps/keeping-your-watchos-app-s-content-up-to-date	Ensure that your app’s content is relevant and up to date.	wwdc2021-10003
guide	Learn more about App Store Connect	https://help.apple.com/app-store-connect/		wwdc2021-10204
guide	Learn more about bug reporting	https://developer.apple.com/bug-reporting/		wwdc2021-10104,wwdc2021-10031,wwdc2021-10029,wwdc2021-10033,wwdc2021-10027
guide	Learn more about creating app clips	https://developer.apple.com/app-clips/		wwdc2021-10012
guide	Learn more about designing subscriptions	https://developer.apple.com/design/human-interface-guidelines/subscriptions/overview/		wwdc2021-10114
documentation	Learn more about enhancing SMS-delivered code security with domain-bound codes	https://developer.apple.com/news/?id=z0i801mg		wwdc2021-10105
documentation	Loading and displaying a large data feed	https://developer.apple.com/documentation/SwiftUI/loading-and-displaying-a-large-data-feed	Consume data in the background, and lower memory use by batching imports and preventing duplicate records.	wwdc2021-10017
documentation	Loading media data asynchronously	https://developer.apple.com/documentation/AVFoundation/loading-media-data-asynchronously	Build responsive apps by using language-level concurrency features to efficiently load media data.	wwdc2021-10146
documentation	Localization	https://developer.apple.com/documentation/Xcode/localization	Expand the market for your app by supporting multiple languages and regions.	wwdc2021-10220,wwdc2021-10221
documentation	Mac Catalyst	https://developer.apple.com/documentation/UIKit/mac-catalyst	Create a version of your iPad app that users can run on a Mac device.	wwdc2021-10053,wwdc2021-10052
documentation	MailKit	https://developer.apple.com/documentation/MailKit	Secure, customize, and act on email messages that users send and receive.	wwdc2021-10168
documentation	Making a configurable widget	https://developer.apple.com/documentation/WidgetKit/Making-a-Configurable-Widget	Give people the option to customize their widgets by adding a custom app intent	wwdc2021-10048,wwdc2021-10049
documentation	Manage settings on devices in a Family Sharing group	https://developer.apple.com/documentation/ManagedSettings/ConnectionWithFrameworks	Empower parents and guardians to configure constraints on other devices while preserving the family’s privacy.	wwdc2021-10123
documentation	Managed Settings	https://developer.apple.com/documentation/ManagedSettings	Access and change settings with your app while maintaining user privacy and control.	wwdc2021-10123
documentation	Managing groups of resources with argument buffers	https://developer.apple.com/documentation/metal/buffers/managing_groups_of_resources_with_argument_buffers	Create argument buffers to organize related resources.	wwdc2021-10286,wwdc2021-10150,wwdc2021-10149
documentation	Managing iCloud Containers with CloudKit Database App	https://developer.apple.com/documentation/CloudKit/managing-icloud-containers-with-cloudkit-database-app	Inspect and modify the schema and data for your app’s iCloud container.	wwdc2021-10117
documentation	Manual Memory Management	https://developer.apple.com/documentation/Swift/manual-memory-management	Allocate and manage memory manually.	wwdc2021-10180
documentation	Measuring App Performance	https://developer.apple.com/app-store/measuring-app-performance/		wwdc2021-10087,wwdc2021-10115
guide	Measuring Walking Quality Through iPhone Mobility Metrics	https://www.apple.com/healthcare/docs/site/Measuring_Walking_Quality_Through_iPhone_Mobility_Metrics.pdf		wwdc2021-10287
documentation	Metal	https://developer.apple.com/documentation/Metal	Render advanced 3D graphics and compute data in parallel with graphics processors.	wwdc2021-10286,wwdc2021-10157,wwdc2021-10152,wwdc2021-10229,wwdc2021-10153,wwdc2021-10150,wwdc2021-10147,wwdc2021-10149,wwdc2021-10148,wwdc2021-10161
download	Metal Developer Tools on Windows	https://developer.apple.com/download/more/?=Metal%20Developer%20Tools%20for%20Windows	Metal Developer Tools on Windows	wwdc2021-10157
guide	Metal Feature Set Tables	https://developer.apple.com/metal/Metal-Feature-Set-Tables.pdf	Features, limits, and capabilities of Metal.	wwdc2021-10286,wwdc2021-10229,wwdc2021-10153,wwdc2021-10147
documentation	Metal Performance Shaders	https://developer.apple.com/documentation/MetalPerformanceShaders	Optimize graphics and compute performance with kernels that are fine-tuned for the unique characteristics of each Metal GPU family.	wwdc2021-10152,wwdc2021-10148
guide	Metal Shading Language Specification	https://developer.apple.com/metal/metal-shading-language-specification.pdf	The Metal shading language is used to write graphics and compute functions that are executed on the GPU. Version 2.0 of the Metal shading language adds new features such as Raster Order Groups, Indirect Argument Buffers, Arrays of Samplers, Uniform Types, and much more.	wwdc2021-10286,wwdc2021-10152,wwdc2021-10229,wwdc2021-10153,wwdc2021-10150,wwdc2021-10149,wwdc2021-10148,wwdc2021-10161
documentation	MetricKit	https://developer.apple.com/documentation/MetricKit	Measure your app’s performance using daily metric and diagnostic reports from real users.	wwdc2021-10087,wwdc2021-10258,wwdc2021-10180,wwdc2021-10181
documentation	MFi Program	https://developer.apple.com/mfi	MFi Program top page	wwdc2021-10084
guide	MFI Program	https://mfi.apple.com	MFi Technologies and the Apple Ecosystem	wwdc2021-10165
documentation	MusicKit	https://developer.apple.com/musickit/	MusicKit lets users play Apple Music and their local music library natively from your apps and now websites. When a user provides permission to their Apple Music account, your app can create playlists, add songs to their library, and play any of the millions of songs in the Apple Music catalog.	wwdc2021-10291
documentation	MusicKit	https://developer.apple.com/documentation/musickit	Integrate your app with Apple Music.	wwdc2021-10294
samplecode	Navigating an app’s user interface using a keyboard	https://developer.apple.com/documentation/UIKit/navigating-an-app-s-user-interface-using-a-keyboard	Navigate between user interface elements using a keyboard and focusable UI elements in iPad apps and apps built with Mac Catalyst.	wwdc2021-10260
documentation	Nearby Interaction	https://developer.apple.com/documentation/NearbyInteraction	Locate and interact with nearby devices using identifiers, distance, and direction.	wwdc2021-10165,wwdc2021-10245
guide	Nearby Interactions with U1	https://developer.apple.com/nearby-interaction/		wwdc2021-10165,wwdc2021-10245
documentation	Network	https://developer.apple.com/documentation/Network	Create network connections to send and receive data using transport and security protocols.	wwdc2021-10103
documentation	NSUserActivity	https://developer.apple.com/documentation/Foundation/NSUserActivity	A representation of the state of your app at a moment in time.	wwdc2021-10264
documentation	Offering Actions in the Shortcuts App	https://developer.apple.com/documentation/SiriKit/offering-actions-in-the-shortcuts-app	Suggest shortcuts users may want to add to Siri or combine with other actions in their own shortcuts.	wwdc2021-10232,wwdc2021-10283
samplecode	Offering Apple Pay in Your App	https://developer.apple.com/documentation/PassKit/offering-apple-pay-in-your-app	Collect payments with iPhone and Apple Watch using Apple Pay.	wwdc2021-10092
guide	Optimize your app for 5G	https://developer.apple.com/news/?id=z0onzfy5		wwdc2021-10103
documentation	Package Collections	https://swift.org/blog/package-collections		wwdc2021-10192
documentation	PassKit (Apple Pay and Wallet)	https://developer.apple.com/documentation/PassKit	Process Apple Pay payments in your app, and create and distribute passes for the Wallet app.	wwdc2021-10092
documentation	PHASE	https://developer.apple.com/documentation/PHASE	Create dynamic audio experiences in your game or app that react to events and cues in the environment.	wwdc2021-10079
documentation	PhotogrammetrySample	https://developer.apple.com/documentation/RealityKit/PhotogrammetrySample	An object that represents one image and its corresponding metadata.	wwdc2021-10076
documentation	PhotogrammetrySession	https://developer.apple.com/documentation/RealityKit/PhotogrammetrySession	Manages the creation of a 3D model from a set of images.	wwdc2021-10076
documentation	PhotoKit	https://developer.apple.com/documentation/photokit	Work with image and video assets managed by the Photos app, including those from iCloud Photos and Live Photos.	wwdc2021-10046,wwdc2021-10160
documentation	Photos	https://developer.apple.com/documentation/photokit	Work with image and video assets managed by the Photos app, including those from iCloud Photo Library and Live Photos. Fetch and cache full-sized assets or thumbnails asynchronously, revise content, and sync revisions to multiple devices.	wwdc2021-10160
documentation	PhysicallyBasedMaterial	https://developer.apple.com/documentation/RealityKit/PhysicallyBasedMaterial	A material that simulates the appearance of real-world objects.	wwdc2021-10074
guide	Prepare Your Network for iCloud Private Relay	https://developer.apple.com/support/prepare-your-network-for-icloud-private-relay/	Prepare Your Network for iCloud Private Relay	wwdc2021-10096
samplecode	Processing HDR images with Metal	https://developer.apple.com/documentation/Metal/processing-hdr-images-with-metal	Implement a post-processing pipeline using the latest features on Apple GPUs.	wwdc2021-10161
documentation	Protecting the User’s Privacy	https://developer.apple.com/documentation/UIKit/protecting-the-user-s-privacy	Secure personal data, and respect user preferences for how data is used.	wwdc2021-10096
documentation	Reality Converter and USDZ Tools	https://developer.apple.com/augmented-reality/tools/	Reality Converter and USDZ Tools	wwdc2021-10077
documentation	RealityKit	https://developer.apple.com/documentation/RealityKit	Simulate and render 3D content for use in your augmented reality apps.	wwdc2021-10075,wwdc2021-10074
samplecode	Recording and Streaming Your macOS App	https://developer.apple.com/documentation/ReplayKit/recording-and-streaming-your-macos-app	Share screen recordings, or broadcast live audio and video of your app, by adding ReplayKit to your macOS apps and games.	wwdc2021-10101
documentation	Reducing terminations in your app	https://developer.apple.com/documentation/Xcode/reduce-terminations-in-your-app	Minimize how frequently the system stops your app by addressing common termination reasons.	wwdc2021-10087
documentation	Reducing your app’s size	https://developer.apple.com/documentation/Xcode/reducing-your-app-s-size	Measure your app’s size, optimize its assets and settings, and adopt technologies	wwdc2021-10013
download	Reference video for FoodMath sample project	https://developer.apple.com/sample-code/audio/shazamkit-mov.zip	Video for use with FoodMath sample project associated with this Code-Along session.	wwdc2021-10045
samplecode	Rendering reflections in real time using ray tracing	https://developer.apple.com/documentation/Metal/rendering-reflections-in-real-time-using-ray-tracing	Implement realistic real-time lighting by dynamically generating reflection maps	wwdc2021-10286,wwdc2021-10150,wwdc2021-10149
documentation	ReplayKit	https://developer.apple.com/documentation/ReplayKit	Record or stream video from the screen, and audio from the app and microphone.	wwdc2021-10101
documentation	Replicated File Provider extension	https://developer.apple.com/documentation/FileProvider/replicated-file-provider-extension	Build a File Provider extension that syncs the local copies of your files with your remote storage.	wwdc2021-10182
documentation	Requesting authorization to use location services	https://developer.apple.com/documentation/CoreLocation/requesting-authorization-to-use-location-services	Obtain authorization to use location services and manage changes to your app’s authorization status.	wwdc2021-10102
samplecode	Research and care app code-along source repository	https://github.com/carekit-apple/WWDC21-RecoverApp.git		wwdc2021-10069,wwdc2021-10282,wwdc2021-10068
documentation	Research and Care Website	https://www.researchandcare.org	Research and Care Website	wwdc2021-10069,wwdc2021-10282,wwdc2021-10068
guide	Result Builders - The Swift Programming Language	https://docs.swift.org/swift-book/LanguageGuide/AdvancedOperators.html#ID630		wwdc2021-10253
documentation	Rigid Body Physics in USD Proposal	https://graphics.pixar.com/usd/docs/Rigid-Body-Physics-in-USD-Proposal.html	Rigid Body Physics in USD Proposal	wwdc2021-10077
documentation	Running your iOS apps in macOS	https://developer.apple.com/documentation/Apple-Silicon/running-your-ios-apps-in-macos	Modernize the iOS apps you choose to run on a Mac with Apple silicon, or opt out of	wwdc2021-10056
documentation	Safari Release Notes	https://developer.apple.com/documentation/safari-release-notes	Learn about changes for Safari and Safari View Controller for iOS, iPadOS, macOS, and in visionOS; WKWebView for iOS, iPadOS, macOS, watchOS, and in visionOS; and Web Inspector on macOS.	wwdc2021-10104,wwdc2021-10031,wwdc2021-10029,wwdc2021-10030,wwdc2021-10027
download	Safari Technology Preview	https://developer.apple.com/safari/technology-preview/	Safari Technology Preview	wwdc2021-10104,wwdc2021-10031,wwdc2021-10029,wwdc2021-10030,wwdc2021-10033,wwdc2021-10027
documentation	Schedule an OS Update	https://developer.apple.com/documentation/devicemanagement/schedule_an_os_update	Schedule an update of the operating system on a device.	wwdc2021-10129
documentation	SE-0296: Async/await	https://github.com/apple/swift-evolution/blob/main/proposals/0296-async-await.md	Swift evolution proposal	wwdc2021-10132
documentation	SE-0297: Concurrency Interoperability with Objective-C	https://github.com/apple/swift-evolution/blob/main/proposals/0297-concurrency-objc.md	Swift evolution proposal	wwdc2021-10132
documentation	SE-0298: Async/Await: Sequences	https://github.com/apple/swift-evolution/blob/main/proposals/0298-asyncsequence.md	Swift evolution proposal	wwdc2021-10058
documentation	SE-0300: Continuations for interfacing async tasks with synchronous code	https://github.com/apple/swift-evolution/blob/main/proposals/0300-continuation.md	Swift evolution proposal	wwdc2021-10132
documentation	SE-0302: Sendable and @Sendable closures	https://github.com/apple/swift-evolution/blob/main/proposals/0302-concurrent-value-and-concurrent-closures.md	Swift evolution proposal	wwdc2021-10133
documentation	SE-0304: Structured concurrency	https://github.com/apple/swift-evolution/blob/main/proposals/0304-structured-concurrency.md	Swift evolution proposal	wwdc2021-10134
documentation	SE-0306: Actors	https://github.com/apple/swift-evolution/blob/main/proposals/0306-actors.md	Swift evolution proposal	wwdc2021-10133
documentation	SE-0310: Effectful read-only properties	https://github.com/apple/swift-evolution/blob/main/proposals/0310-effectful-readonly-properties.md	Swift evolution proposal	wwdc2021-10132
documentation	SE-0313: Improved control over actor isolation	https://github.com/apple/swift-evolution/blob/main/proposals/0313-actor-isolation-control.md	Swift evolution proposal	wwdc2021-10133
documentation	SE-0314: AsyncStream and AsyncThrowingStream	https://github.com/apple/swift-evolution/blob/main/proposals/0314-async-stream.md	Swift evolution proposal	wwdc2021-10058
documentation	SE-0316: Global actors	https://github.com/apple/swift-evolution/blob/main/proposals/0316-global-actors.md	Swift evolution proposal	wwdc2021-10133
documentation	SE-0317: async let	https://github.com/apple/swift-evolution/blob/main/proposals/0317-async-let.md	Swift evolution proposal	wwdc2021-10134
developerForum	Search developer forums for AR Quick Look	https://developer.apple.com/forums/tags/ar-quick-look	Search developer forums for AR Quick Look	wwdc2021-10078
developerForum	Search forums for USDZ	https://developer.apple.com/forums/tags/usdz	Search forums for USDZ	wwdc2021-10077
guide	Securing Logins with iCloud Keychain Verification Codes	https://developer.apple.com/documentation/AuthenticationServices/securing-logins-with-icloud-keychain-verification-codes	Use time-based codes generated on-device for a secure authentication experience.	wwdc2021-10105
samplecode	Selecting Photos and Videos in iOS	https://developer.apple.com/documentation/PhotoKit/selecting-photos-and-videos-in-ios	Improve the user experience of finding and selecting assets by using the Photos picker.	wwdc2021-10046
documentation	Sequence	https://developer.apple.com/documentation/Swift/Sequence	A type that provides sequential, iterated access to its elements.	wwdc2021-10256
documentation	SFSafariViewController	https://developer.apple.com/documentation/SafariServices/SFSafariViewController	An object that provides a visible standard interface for browsing the web.	wwdc2021-10032
documentation	Shader libraries	https://developer.apple.com/documentation/Metal/shader-libraries	Manage and load your app’s Metal shaders.	wwdc2021-10229
documentation	Sharing access to keychain items among a collection of apps	https://developer.apple.com/documentation/Security/sharing-access-to-keychain-items-among-a-collection-of-apps	Enable apps to share keychain items with each other by adding the apps to an access group.	wwdc2021-10003
samplecode	Sharing Your Location to Find a Park	https://developer.apple.com/documentation/CoreLocationUI/sharing-your-location-to-find-a-park	Ask for location access using a customizable location button.	wwdc2021-10102
documentation	ShazamKit	https://developer.apple.com/documentation/ShazamKit	Find information about a specific audio recording when a segment of it’s part of captured sound in the Shazam catalog or your custom catalog.	wwdc2021-10044,wwdc2021-10045
samplecode	Showcase App Data in Spotlight	https://developer.apple.com/documentation/CoreData/showcase-app-data-in-spotlight	Index app data so users can find it by using Spotlight search.	wwdc2021-10098
samplecode	Simplifying User Authentication in a tvOS App	https://developer.apple.com/documentation/AuthenticationServices/simplifying-user-authentication-in-a-tvos-app	Build a fluid sign-in experience for your tvOS apps using AuthenticationServices.	wwdc2021-10279
documentation	SiriKit	https://developer.apple.com/documentation/SiriKit	Empower users to interact with their devices through voice, intelligent suggestions, and personalized workflows.	wwdc2021-10091
documentation	SKAdNetwork	https://developer.apple.com/documentation/StoreKit/SKAdNetwork	A class that validates advertisement-driven app installations.	wwdc2021-10033
samplecode	SlothCreator: Building DocC documentation in Xcode	https://developer.apple.com/documentation/Xcode/slothcreator-building-docc-documentation-in-xcode	Build DocC documentation for a Swift package that contains a DocC Catalog.	wwdc2021-10167,wwdc2021-10236,wwdc2021-10235,wwdc2021-10166
documentation	Sound Analysis	https://developer.apple.com/documentation/SoundAnalysis	Classify various sounds by analyzing audio files or streams.	wwdc2021-10036
documentation	StoreKit	https://developer.apple.com/documentation/StoreKit	Support In-App Purchases and interactions with the App Store.	wwdc2021-10175,wwdc2021-10174,wwdc2021-10114,wwdc2021-10033
documentation	Supporting Associated Domains	https://developer.apple.com/documentation/xcode/supporting-associated-domains	Connect your app and a website to provide both a native app and a browser experience.	wwdc2021-10003
documentation	Supporting coordinated media playback	https://developer.apple.com/documentation/AVFoundation/supporting-coordinated-media-playback	Create synchronized media experiences that enable users to watch and listen across devices.	wwdc2021-10189,wwdc2021-10183,wwdc2021-10225,wwdc2021-10187
guide	Supporting passkeys	https://developer.apple.com/documentation/AuthenticationServices/supporting-passkeys	Eliminate passwords for your users when they sign in to apps and websites.	wwdc2021-10106
guide	Supporting Security Key Authentication Using Physical Keys	https://developer.apple.com/documentation/AuthenticationServices/supporting-security-key-authentication-using-physical-keys	Allow users to authenticate using NFC, USB, and Lightning security keys in your app or service.	wwdc2021-10106
documentation	Swift Algorithms on GitHub	https://github.com/apple/swift-algorithms	GitHub repository for the Swift Algorithms package.	wwdc2021-10256,wwdc2021-10192
documentation	Swift Argument Parser on GitHub	https://github.com/apple/swift-argument-parser	Straightforward, type-safe argument parsing for Swift.	wwdc2021-10192
guide	Swift AWS Lambda Runtime on GitHub	https://github.com/swift-server/swift-aws-lambda-runtime/	The Swift AWS Lambda Runtime GitHub repository where you can find sample code, scripts, documentation and more.	wwdc2021-10192
documentation	Swift Collections on GitHub	https://github.com/apple/swift-collections	GitHub repository for the Swift Collections package.	wwdc2021-10256,wwdc2021-10192
documentation	Swift Compiler Driver on GitHub	https://github.com/apple/swift-driver	The GitHub repository for the Swift compiler driver project.	wwdc2021-10192
guide	Swift Evolution	https://apple.github.io/swift-evolution/	The list of Swift Evolution proposals.	wwdc2021-10192
developerForum	Swift Forums	https://forums.swift.org	Forums for the Swift open-source project.	wwdc2021-10256,wwdc2021-10192
documentation	Swift Mentorship Program	https://swift.org/mentorship/		wwdc2021-10192
documentation	Swift Numerics on GitHub	https://github.com/apple/swift-numerics	Swift Numerics provides a set of modules that support numerical computing in Swift.	wwdc2021-10192
documentation	Swift Package Collection Generator	https://github.com/apple/swift-package-collection-generator		wwdc2021-10197
documentation	Swift Package Index	https://swiftpackageindex.com/		wwdc2021-10192
documentation	Swift System on GitHub	https://github.com/apple/swift-system	GitHub repository for the Swift System package.	wwdc2021-10192
documentation	SwiftUI	https://developer.apple.com/documentation/SwiftUI	Declare the user interface and behavior for your app on every platform.	wwdc2021-10018
samplecode	Synchronizing a local store to the cloud	https://developer.apple.com/documentation/CoreData/synchronizing-a-local-store-to-the-cloud	Share data between a user’s devices and other iCloud users.	wwdc2021-10015
samplecode	Synchronizing files using file provider extensions	https://developer.apple.com/documentation/FileProvider/synchronizing-files-using-file-provider-extensions	Make remote files available in macOS and iOS, and synchronize their states by using file provider extensions.	wwdc2021-10182
documentation	Testing the launch experience of your App Clip	https://developer.apple.com/documentation/AppClip/testing-the-launch-experience-of-your-app-clip	Debug App Clip invocations, test the launch experience, and verify the configuration of your released App Clip.	wwdc2021-10013
documentation	TextKit	https://developer.apple.com/documentation/AppKit/textkit	Manage text storage and perform custom layout of text-based content in your app’s views.	wwdc2021-10061
guide	The Swift Programming Language: Concurrency	https://docs.swift.org/swift-book/documentation/the-swift-programming-language/concurrency/	The chapter of the Language Guide in The Swift Programming Language that covers asynchronous and parallel code, including asynchronous functions (async/await), asynchronous sequences (AsyncSequence), async let, tasks, task groups, and actors.	wwdc2021-10132,wwdc2021-10058,wwdc2021-10254,wwdc2021-10194,wwdc2021-10133,wwdc2021-10134,wwdc2021-10192
documentation	TimelineEntry	https://developer.apple.com/documentation/WidgetKit/TimelineEntry	A type that specifies the date to display a widget, and, optionally,	wwdc2021-10049
samplecode	Tracking geographic locations in AR	https://developer.apple.com/documentation/ARKit/tracking-geographic-locations-in-ar	Track specific geographic areas of interest and render them in an AR experience.	wwdc2021-10073
samplecode	Training a Neural Network with Metal Performance Shaders	https://developer.apple.com/documentation/MetalPerformanceShaders/training-a-neural-network-with-metal-performance-shaders	Use an MPS neural network graph to train a simple neural network digit classifier.	wwdc2021-10152
documentation	UIButton.Configuration	https://developer.apple.com/documentation/UIKit/UIButton/Configuration-swift.struct	A configuration that specifies the appearance and behavior of a button and its contents.	wwdc2021-10196
documentation	UIKit	https://developer.apple.com/documentation/UIKit	Construct and manage a graphical, event-driven user interface for your iOS, iPadOS, or tvOS app.	wwdc2021-10057,wwdc2021-10252,wwdc2021-10260,wwdc2021-10064,wwdc2021-10059,wwdc2021-10063
documentation	UNLocationNotificationTrigger	https://developer.apple.com/documentation/UserNotifications/UNLocationNotificationTrigger	A trigger condition that causes the system to deliver a notification when the user’s device enters or exits a geographic region you specify.	wwdc2021-10002
samplecode	Updating an App to Use Swift Concurrency	https://developer.apple.com/documentation/swift/updating_an_app_to_use_swift_concurrency	Improve your app’s performance by refactoring your code to take advantage of asynchronous functions in Swift.	wwdc2021-10194
guide	Updating watchOS apps with timelines	https://developer.apple.com/documentation/watchOS-Apps/updating-watchos-apps-with-timelines	Seamlessly schedule updates to your user interface, even while it’s inactive.	wwdc2021-10002
documentation	URLSession	https://developer.apple.com/documentation/Foundation/URLSession	An object that coordinates a group of related, network data transfer tasks.	wwdc2021-10103,wwdc2021-10095
documentation	URLSession Programming Guide	https://developer.apple.com/library/content/documentation/Cocoa/Conceptual/URLLoadingSystem/URLLoadingSystem.html		wwdc2021-10103
documentation	USD Github Repository	https://github.com/PixarAnimationStudios/USD	USD Github Repository	wwdc2021-10077
documentation	USDZ schemas for AR	https://developer.apple.com/documentation/arkit/arkit_in_ios/usdz_schemas_for_ar	Add augmented reality functionality to your 3D content using USDZ schemas.	wwdc2021-10077
documentation	User Interface Tests	https://developer.apple.com/documentation/xctest/user_interface_tests	Make sure that your app’s user interface behaves correctly when expected actions are performed.	wwdc2021-10208
documentation	User Notifications	https://developer.apple.com/documentation/UserNotifications	Push user-facing notifications to the user’s device from a server, or generate them locally from your app.	wwdc2021-10091
guide	Using Apple Watch to Estimate Cardio Fitness with VO2 max	https://www.apple.com/healthcare/docs/site/Using_Apple_Watch_to_Estimate_Cardio_Fitness_with_VO2_max.pdf		wwdc2021-10287
documentation	Using Apple Watch to Estimate Six-Minute Walk Distance	https://www.apple.com/healthcare/docs/site/Using_Apple_Watch_to_Estimate_Six_Minute_Walk_Distance.pdf		wwdc2021-10287
samplecode	Using MusicKit to integrate with Apple Music	https://developer.apple.com/documentation/MusicKit/using-musickit-to-integrate-with-apple-music	Find an album in Apple Music that corresponds to a CD in a user’s collection, and present the information for the album.	wwdc2021-10294
samplecode	Using TextKit 2 to interact with text	https://developer.apple.com/documentation/UIKit/using-textkit-2-to-interact-with-text	Interact with text by managing text selection and inserting custom text elements.	wwdc2021-10061
documentation	Validating apps that connect to your server	https://developer.apple.com/documentation/DeviceCheck/validating-apps-that-connect-to-your-server	Verify that connections to your server come from legitimate instances of your app.	wwdc2021-10244,wwdc2021-10110
documentation	Video Toolbox	https://developer.apple.com/documentation/VideoToolbox	Work directly with hardware-accelerated video encoding and decoding capabilities.	wwdc2021-10158
documentation	Vision	https://developer.apple.com/documentation/Vision	Analyze image and video content in your app using computer vision algorithms for object detection, text recognition, and image segmentation.	wwdc2021-10040,wwdc2021-10041,wwdc2021-10039
documentation	Wallet	https://developer.apple.com/documentation/PassKit/wallet	Manage tickets, boarding passes, payment cards and other passes in the Wallet app.	wwdc2021-10092
documentation	WCSession	https://developer.apple.com/documentation/WatchConnectivity/WCSession	The object that initiates communication between a WatchKit extension and its companion iOS app.	wwdc2021-10003
documentation	Web Inspector Reference	https://webkit.org/web-inspector/	Web Inspector Documentation	wwdc2021-10031
documentation	WebKit	https://developer.apple.com/documentation/WebKit	Integrate web content seamlessly into your app, and customize content interactions to meet your app’s needs.	wwdc2021-10032
guide	WebKit Open Source Project	https://webkit.org	WebKit Open Source Project	wwdc2021-10029,wwdc2021-10030,wwdc2021-10032,wwdc2021-10033
documentation	Writing custom build scripts	https://developer.apple.com/documentation/Xcode/Writing-Custom-Build-Scripts	Extend your Xcode Cloud workflows with custom build scripts that perform custom tasks or install additional tools.	wwdc2021-10269
guide	Writing symbol documentation in your source files	https://developer.apple.com/documentation/Xcode/writing-symbol-documentation-in-your-source-files	Add reference documentation to your symbols that explains how to use them.	wwdc2021-10166
documentation	Xcode Cloud	https://developer.apple.com/documentation/Xcode/Xcode-Cloud	Automatically build, test, and distribute your apps with Xcode Cloud to verify changes and create high-quality apps.	wwdc2021-10268,wwdc2021-10269,wwdc2021-10267
documentation	Xcode Cloud workflow reference	https://developer.apple.com/documentation/Xcode/Xcode-Cloud-Workflow-Reference	Configure metadata, start conditions, actions, post-actions, and more to create custom Xcode Cloud workflows.	wwdc2021-10268,wwdc2021-10269
documentation	XCTest	https://developer.apple.com/documentation/XCTest	Create and run unit tests, performance tests, and UI tests for your Xcode project.	wwdc2021-10180,wwdc2021-10181