two-factor-authentication-best-practices

Implementing two-factor authentication with Better Auth involves enabling and configuring the twoFactor plugin across both server and client to enforce TOTP-based authentication. This covers plugin installation, integration, and database migrations for secure login flows.

The best way to set up TOTP and backup codes for MFA enrollment is using a structured plugin approach that generates time-based codes via authenticator apps while providing secure backup codes for access recovery and trusted devices to reduce login friction.

Yes, you can use Better Auth's twoFactor plugin for OTP delivery via email and SMS. It supports sending one-time codes for both sign-in verification and account recovery within your web application's authentication lifecycle.

Trusted-device management with TOTP authentication works by allowing users to mark specific devices as trusted after initial verification, reducing friction by bypassing repeated two-factor authentication prompts on known devices while maintaining login security.

Security considerations when enforcing multi-factor authentication include ensuring proper 2FA enforcement across all sign-in flows, secure backup code generation and storage, trusted-device validation, and correct server-client configuration to prevent credential theft vulnerabilities.