ESP32 MFA Authenticator
Offline two-factor code generator on the yellow display: your TOTP secrets stay on a board you own, behind a PIN.No solderingAbout 15 min
1 boardBesides the board: microSD cardCan be built in an eveningYour project could be here
Point Chipnik at your GitHub repository and it picks up the releases. People get a Flash button for their board.