SagarBiswas-MultiHAT/Multi-FA-Auth
A beginner-friendly Node/Express + Vanilla JS authentication demo that implements a complete sign-up/sign-in lifecycle: email verification (4‑digit OTP), optional 2FA (email OTP, TOTP authenticator, backup codes), password reset, account settings, session handling, and deploy-ready email fallback (Brevo → SMTP → debug).
GitHub repository with 29 stars and 0 forks.
Language: JavaScript
Topics: authentication, backup-codes, beginner-friendly, brevo, demo, deploy, email-verification, express, javascript, nodejs