Nostr Authenticator

Nostr Authenticator is a mobile application that allows you to securely sign authentication requests using your Nostr keys, directly on your device. The app is built as a secure companion for passwordless login systems, where authentication is performed by cryptographically signing one-time challenges — without passwords, emails, or centralized accounts. **Key features:** * Secure signing of authentication challenges * NIP-07 compatible message signing * Support for multiple Nostr accounts * Local key storage protected by biometrics * Private keys never leave your device * Works with browser extensions and Nostr DM-based authentication flows Nostr Authenticator allows you to authenticate using your **npub or NIP address** and approve login requests either directly from a browser extension or by replying to a challenge received via a Nostr direct message. Designed with privacy, security, and user-owned identity in mind. You can test the application at https://it.botrift.com **This is how passwordless login should work.**

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