Currently, all Nostr clients store private keys within their apps, whether as a web extension or mobile app.

With Satochip, we provide a secure element to store private keys externally, enhancing security.

This beta version is CLI-only for now, but with positive feedback, we may develop software integration.

For example, you could use Amethyst (or similar apps) with a Satochip NFC smartcard, keeping private keys outside the app—boosting security without sacrificing convenience.

On desktop, Satochip works with a conventional smartcard reader, and with proper integration, a single card could be used across multiple Nostr clients.