Passkeys cross platform

Cloud-sync FIDO2 credentials replacing passwords.

Definition

Passkeys use public / private key pairs per site, private key stored in Secure Enclave / TPM / TEE, synced between devices via end-to-end encryption (iCloud Keychain, Google Password Manager). Biometric authentication (Face ID, Touch ID, Windows Hello). Cross-platform via QR + BLE caBLE for sign-in iPhone on Windows PC for example. 2023-2024 adoption GitHub, Amazon, Adobe, Best Buy, eBay, Yahoo.

Origin

Apple + Google + Microsoft public commitment March 2022 (FIDO Alliance), GA 2023 (iOS 16, Android 13, Windows 11 22H2).

Usage

Replacing passwords for consumers in 2024-2025. Slower enterprise adoption (legacy infrastructure).

Related terms

• FIDO2 CTAP — protocole sous-jacent.
• WebAuthn L3 — API navigateur.
• Passkey — concept générique.