two-factor-authentication-best-practices

Implement two-factor authentication in Better Auth by configuring the twoFactor plugin on both server and client, then running the database migration command to enable TOTP, OTP delivery, and backup codes.

Better Auth two-factor authentication supports sending OTP codes via email and SMS alongside TOTP authenticator app setup, allowing flexible multi-factor authentication delivery methods for secure sign-in flows.

Handle trusted devices for MFA using the Better Auth twoFactor plugin, which manages trusted device states and session security to streamline secure user logins without requiring repeated multi-factor verification prompts.

Backup codes in Better Auth two-factor authentication provide recovery access when users lose their TOTP authenticator app or OTP delivery method, managed securely through the twoFactor plugin during the MFA setup process.

Better Auth supports TOTP authenticator apps for multi-factor authentication through its twoFactor plugin, enabling secure user logins by generating and verifying time-based one-time passwords during the 2FA sign-in flow.

Implementing multi-factor authentication enhances user account security beyond simple password protection by requiring a second verification step like a TOTP code or OTP, preventing unauthorized access even if passwords are compromised.