Flipper Authenticator is a software-based authenticator that implements two-step verification services using the Time-based One-time Password (TOTP; specified in RFC 6238) and HMAC-based One-time Password algorithm.
It is like Google Authenticator, but for Flipper Zero device.
There is a companion app for desktop allowing you to interract with Flipper Authenticator in a more user-friendly way. Latest builds as well as all the information about it can be found in its official repo here
Checkout Wiki or ask in Discord channel