Security Keys for Apple ID

Security Keys for Apple ID is support for s to provide additional security for Apple ID accounts against phishing or targeted attacks. It was introduced by Apple with the releases of iOS 16.3, iPadOS 16.3, and macOS 13.2 (Ventura) on January 23, 2023.

Requirements

 * At least two -certified s that work with the Apple devices to be used on a regular basis.
 * iOS 16.3, iPadOS 16.3, macOS 13.2 (Ventura), or later on all of the devices that are signed in with the Apple ID.
 * set up for the Apple ID.
 * A modern web browser that supports security keys to sign in on the web.
 * To sign in to an Apple Watch, Apple TV, or HomePod after security keys are set up, a supported iPhone or iPad will be needed.

Not supported

 * Signing into iCloud for Windows is not supported.
 * Signing in to older devices that cannot be updated to a software version that supports security keys.
 * Child accounts and managed Apple IDs are not supported.
 * Apple Watches that are paired with a family member's iPhone are not supported. To use security keys on an Apple Watch, it must be paired with one's own iPhone.

Trivia
iPhones running iOS 10 or later can themselves be used as security keys for Google accounts.

Articles

 * Five best security keys for iOS 16.3 by Andrew Orr at AppleInsider (2023-01-26)