<h1 id="basic">Basic</h1>
<p><a target="_blank" href="https://en.wikipedia.org/wiki/Time-based_One-time_Password_algorithm">Time-based One-time Password algorithm</a>
<a target="_blank" href="https://tools.ietf.org/html/rfc6238">TOTP: Time-Based One-Time Password Algorithm, RFC 6238</a></p>
<h2 id="authenticator">Authenticator</h2>
<ul>
<li><a target="_blank" href="https://freeotp.github.io/">FreeOTP</a></li>
<li><a target="_blank" href="https://en.wikipedia.org/wiki/Google_Authenticator">Google Authenticator</a></li>
<li><a target="_blank" href="https://authy.com/">Authy</a></li>
<li><a target="_blank" href="https://www.microsoft.com/zh-tw/account/authenticator">Microsoft Authenticator</a></li>
</ul>
<h2 id="article">Article</h2>
<ul>
<li><a target="_blank" href="https://medium.com/daily-life-productivity/why-i-use-1password-for-2fa-token-e03feb2c4559">為什麼我拋棄 Google Authenticator 改用 1Password 管理 OTP token</a></li>
<li><a target="_blank" href="https://www.nytimes.com/wirecutter/reviews/best-two-factor-authentication-app/">The Best Two-Factor Authentication App</a></li>
</ul>


# Basic
[Time-based One-time Password algorithm](https://en.wikipedia.org/wiki/Time-based_One-time_Password_algorithm)
[TOTP: Time-Based One-Time Password Algorithm, RFC 6238](https://tools.ietf.org/html/rfc6238)

## Authenticator
* [FreeOTP](https://freeotp.github.io/)
* [Google Authenticator](https://en.wikipedia.org/wiki/Google_Authenticator)
* [Authy](https://authy.com/)
* [Microsoft Authenticator](https://www.microsoft.com/zh-tw/account/authenticator)

## Article
* [為什麼我拋棄 Google Authenticator 改用 1Password 管理 OTP token](https://medium.com/daily-life-productivity/why-i-use-1password-for-2fa-token-e03feb2c4559)
* [The Best Two-Factor Authentication App](https://www.nytimes.com/wirecutter/reviews/best-two-factor-authentication-app/)

Chris Yuan's Blog

Chris Yuan's Blog

Time-based One-time Password algorithm (TOTP)

Basic

Authenticator

Article