Support TOTP two factor authentication so I can use google authenticator.
<Wikipedia> Time-based One-time Password Algorithm (TOTP) is an algorithm that computes a one-time password from a shared secret key and the current time. It has been adopted as Internet Engineering Task Force standard RFC 6238, is the cornerstone of Initiative For Open Authentication (OATH) and is used in a number of two factor authentication systems.
QR setup code generator
Setup code generator
Integration into the login page like yubikey
https://github.com/komone/qrcode has the backend for such requirements.