SentryKey is a self-contained TOTP (two-factor authentication) authenticator for Garmin smartwatches, with Android and iOS companions. Generate codes directly on-device with zero dependencies.
A simple, privacy-respecting structure that places your keys under your control.
Rotating 2FA codes are generated entirely on-device on your Garmin watch. No phone is required after your initial sync.
Back up your credentials to your own VPS. All data is encrypted client-side in the browser. The server never sees your raw secrets.
Add accounts on your phone companion, and push them instantly to your watch over BLE using the Garmin Connect IQ SDK.