Scan a QR code with AuthRelay on your phone. Your desktop signs in instantly — no passwords typed, no secrets ever leave your device.
Free forever · MIT License · No account required
Three steps. No passwords. No friction.
Add AuthRelay to Chrome. It watches for Google sign-in pages automatically.
When sign-in is detected, a QR code appears. Scan it with the AuthRelay app on your phone.
Authenticate on your phone. Your desktop browser completes sign-in instantly.
Built with security and simplicity at its core
All data is encrypted on your device before transmission. The relay server is blind to your credentials — it only routes sealed packets between your phone and browser.
AES-256-GCMThe relay server never sees your credentials. Only encrypted blobs pass through.
Fully auditable under the MIT License. Verify it yourself on GitHub.
Sessions expire automatically. No persistent tokens stored on any server. Nothing to leak, nothing to steal.
Any Chromium browser on any desktop OS.
No bloat, no background processes, no tracking.
Install both the mobile app and the Chrome extension to get started.
AuthRelay is free and open source. If you find it useful, consider supporting development.