two-factor-authentication-best-practices

Automate TOTP, OTP, backup codes, and trusted devices with Better Auth's twoFactor plugin.

Updated Aug 27, 2026
One-click install
npx skills add https://github.com/iptoux/localvoice --skill two-factor-authentication-best-practices-iptoux
Or copy as Structured Prompt for Agent
Please help me install this Agent Skill.
Skill: two-factor-authentication-best-practices
Source: https://github.com/iptoux/localvoice/tree/main/.claude/skills/two-factor-authentication-best-practices
Command: npx skills add https://github.com/iptoux/localvoice --skill two-factor-authentication-best-practices-iptoux

SYSTEM DOCUMENTATION & REQUIREMENTS

What problem does it solve?

Many applications struggle to enroll and enforce multi-factor authentication, leaving accounts at risk. This skill provides a structured approach to implement and manage MFA using Better Auth's twoFactor plugin, covering TOTP, OTP delivery, backup codes, trusted devices, and sign-in flow controls.

Core Features & Use Cases

  • TOTP setup and verification: enable authenticator apps for users and verify codes.
  • OTP delivery via Email/SMS: configure secure delivery of one-time codes.
  • Backup codes & trusted devices: provide recovery options and device trust to reduce friction.
  • End-to-end sign-in workflow: integrate 2FA into the login flow with appropriate redirects.

Quick Start

Enable a robust two-factor authentication flow by wiring the twoFactor plugin into your server and client configurations.

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 set up two-factor authentication using TOTP in a web app?

Two-factor authentication setup using TOTP involves wiring the twoFactor plugin into your server and client configurations to enable authenticator apps and verify time-based one-time passwords.

What's the best way to manage backup codes and trusted devices for MFA?

Managing backup codes and trusted devices for MFA requires a structured approach to provide recovery options and device trust, reducing user friction while maintaining secure storage and verification workflows.

Can I use Better Auth to deliver OTP codes via Email or SMS?

Better Auth supports OTP delivery via Email or SMS by configuring secure delivery of one-time codes alongside TOTP setup, backup codes, and trusted devices within your authentication flows.

How does two-factor authentication handle rate limiting and server-client integration?

Two-factor authentication handles rate limiting and server-client integration by ensuring secure storage and verification workflows, applying appropriate redirects, and implementing error handling for a production-grade MFA experience.

When do I need to enforce multi-factor authentication in my application?

You need to enforce multi-factor authentication when applications struggle to enroll users in MFA, leaving accounts at risk and requiring structured TOTP setup, OTP delivery, and sign-in flow controls.

Does two-factor authentication support end-to-end sign-in workflow integration?

Two-factor authentication supports end-to-end sign-in workflow integration by incorporating 2FA into the login flow with appropriate redirects, ensuring server-client integration covers the complete user authentication experience.