Apple Platform Security
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Welcome
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Introduction
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Services security overview
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Apple Pay overview
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Apple Pay components
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Secure Element and NFC controller
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Payment authorization
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Transaction-specific dynamic security code
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Pay with credit and debit cards in stores
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Pay with credit and debit cards within apps
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Paying with credit and debit cards on the web
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Contactless passes
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Render cards unusable
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Suspending, removing, and erasing cards
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Apple Cash
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Transit cards
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Credit and debit cards for transit
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Student ID cards
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Business Chat
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FaceTime
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Developer Kits overview
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HomeKit identity
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Communication with HomeKit accessories
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Local data storage
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Data synchronization between devices and users
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Home data and apps
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HomeKit and Siri
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HomeKit IP cameras
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HomeKit routers
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iCloud remote access for HomeKit accessories
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HomeKit TV Remote accessories
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Apple TV profiles for HomeKit homes
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CloudKit
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SiriKit
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DriverKit
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Camera and ARKit
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Secure device management overview
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Pairing model
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Passcode and password settings management
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Configuration enforcement
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Mobile device management (MDM)
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Automated Device Enrollment
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Apple Configurator 2
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Device supervision
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Device restrictions
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Activation Lock
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Lost Mode, remote wipe, and remote lock
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Screen Time
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Glossary
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Document Revision History
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Copyright

Password AutoFill
Password AutoFill automatically fills credentials stored in the keychain. The iCloud Keychain password manager and Password AutoFill provide the following features:
Filling credentials in apps and websites
Generating strong passwords
Saving passwords in both apps and websites in Safari
Sharing passwords securely to a users’ contacts
Providing passwords to a nearby Apple TV that’s requesting credentials
Generating and saving passwords within apps, as well as providing passwords to Apple TV, are available only in iOS and iPadOS.
Password AutoFill in apps
iOS and iPadOS allow users to input saved user names and passwords into credential-related fields in apps, similar to how Password AutoFill works in Safari. In iOS and iPadOS, users do this by tapping a key affordance in the software keyboard’s QuickType bar. In macOS, for apps built with Mac Catalyst, a Passwords drop-down menu appears below credential-related fields.
When an app is strongly associated with a website using the same app-website association mechanism, powered by the apple-app-site-association file, the iOS and iPadOS QuickType bar and macOS drop-down menu directly suggest credentials for the app, if any are saved to the Password AutoFill Keychain. This allows users to choose to disclose Safari-saved credentials to apps with the same security properties, but without apps having to adopt an API.
Password AutoFill exposes no credential information to an app until a user consents to release a credential to the app. The credential lists are drawn or presented out of the app’s process.
When an app and website have a trusted relationship and a user submits credentials within an app, iOS and iPadOS may prompt the user to save those credentials to the Password AutoFill Keychain for later use.