A lightweight Yii2 extension that brings hardware-token-grade two-factor authentication to any Yii2 application. Implements both HOTP (counter-based) and TOTP (time-based) one-time password algorithms, making it compatible with Google Authenticator, Authy, and any standards-compliant TOTP app.

Reached 14 GitHub stars and served as the go-to 2FA solution for the Yii2 ecosystem before vendor-native MFA became mainstream.