Cross-Device Passkey Authentication: Hybrid Flow Implementation

Cross-Device Passkey Authentication: Hybrid Flow Implementation

Cross-device passkey authentication allows users to log in to an application using a passkey created on one device on another device without needing to enter a password. This method leverages WebAuthn, a standard for strong, secure authentication, enabling seamless and secure access across multiple devices. What is Cross-Device Passkey Authentication? Cross-device passkey authentication simplifies the login process by allowing users to authenticate using a passkey generated on one device (like a smartphone) to sign in on another device (like a laptop). This eliminates the need for remembering passwords and enhances security by relying on cryptographic keys instead of passwords. ...

Feb 25, 2026 · 8 min · 1500 words · IAMDevBox