two-factor-authentication-best-practices

Implement TOTP-based two-factor authentication with Better Auth's twoFactor plugin.

9|Updated Dec 13, 2025
One-click install
npx skills add https://github.com/PhantomKnight287/saturn --skill two-factor-authentication-best-practices-phantomknight287
Or copy as Structured Prompt for Agent
Please help me install this Agent Skill.
Skill: two-factor-authentication-best-practices
Source: https://github.com/PhantomKnight287/saturn/tree/main/.agents/skills/two-factor-authentication-best-practices
Command: npx skills add https://github.com/PhantomKnight287/saturn --skill two-factor-authentication-best-practices-phantomknight287

SYSTEM DOCUMENTATION & REQUIREMENTS

What problem does it solve?

2FA best practices address login security by guiding teams to implement reliable multi-factor authentication, reducing the risk of credential theft and account takeover.

Core Features & Use Cases

  • TOTP-based authenticator setup and verification
  • OTP delivery via email/SMS with secure delivery options
  • Backup codes generation, storage, and rotation
  • Trusted devices and session management to minimize friction while preserving security

Quick Start

Configure your server with the twoFactor plugin and enable a 2FA flow to require verification during sign-in.

Frequently Asked Questions about two-factor-authentication-best-practices

High-intent search queries and answers about installing and using this skill.

FAQPage Schema
How do I implement two-factor authentication using TOTP in my web application?

You can implement two-factor authentication by integrating a TOTP-based authenticator setup, configuring OTP delivery via email or SMS, and applying secure sign-in verification workflows to reduce the risk of credential theft and account takeover.

What is the best way to generate and manage backup codes for MFA?

The best way to manage backup codes for MFA is to follow a comprehensive blueprint that specifies secure generation, storage, and rotation of backup codes, ensuring users can regain access if they lose their primary authentication device.

Can I set up trusted devices to minimize friction during two-factor authentication?

Yes, you can set up trusted devices and session management to minimize friction during two-factor authentication while preserving security, allowing returning users on verified devices to bypass repeated MFA prompts.

Does implementing MFA with Better Auth require database migrations?

Yes, implementing MFA with Better Auth requires enabling the twoFactor plugin, migrating your database, and verifying database changes to ensure the schema properly supports TOTP setup, OTP delivery, and backup code storage.

What are the limitations of relying solely on OTP delivery for two-factor authentication?

Relying solely on OTP delivery for two-factor authentication without trusted device management can create user friction, so combining OTP delivery with backup codes and trusted session management ensures a more robust and reliable security posture.