# Two-Factor  Enable Two-Factor Authentication using time-based one-time passwords (OTP, Google Authenticator), Universal 2nd Factor (FIDO U2F, YubiKey), email and backup verification codes. **Contributors:** [georgestephanis](https://profiles.wordpress.org/georgestephanis), [valendesigns](https://profiles.wordpress.org/valendesigns), [stevenkword](https://profiles.wordpress.org/stevenkword), [extendwings](https://profiles.wordpress.org/extendwings), [sgrant](https://profiles.wordpress.org/sgrant), [aaroncampbell](https://profiles.wordpress.org/aaroncampbell), [johnbillion](https://profiles.wordpress.org/johnbillion), [stevegrunwell](https://profiles.wordpress.org/stevegrunwell), [netweb](https://profiles.wordpress.org/netweb), [kasparsd](https://profiles.wordpress.org/kasparsd) **Tags:** [two factor](https://wordpress.org/plugins/tags/two-factor), [two step](https://wordpress.org/plugins/tags/two-step), [authentication](https://wordpress.org/plugins/tags/authentication), [login](https://wordpress.org/plugins/tags/login), [totp](https://wordpress.org/plugins/tags/totp), [fido u2f](https://wordpress.org/plugins/tags/fido-u2f), [u2f](https://wordpress.org/plugins/tags/u2f), [email](https://wordpress.org/plugins/tags/email), [backup codes](https://wordpress.org/plugins/tags/backup-codes), [2fa](https://wordpress.org/plugins/tags/2fa), [yubikey](https://wordpress.org/plugins/tags/yubikey) **Requires at least:** 4.3 **Tested up to:** 5.2 **Stable tag:** trunk (master) [](https://travis-ci.org/georgestephanis/two-factor) [](https://coveralls.io/github/georgestephanis/two-factor) [](http://gruntjs.com) ## Description ## Use the "Two-Factor Options" section under "Users" → "Your Profile" to enable and configure one or multiple two-factor authentication providers for your account: - Email codes - Time Based One-Time Passwords (TOTP) - FIDO Universal 2nd Factor (U2F) - Backup Codes - Dummy Method (only for testing purposes) For more history, see [this post](https://stephanis.info/2013/08/14/two-cents-on-two-factor/). ## Screenshots ## ### Two-factor options under User Profile.  ### U2F Security Keys section under User Profile.  ## Get Involved ## Development happens [on GitHub](https://github.com/georgestephanis/two-factor/). Join the `#core-passwords` channel [on WordPress Slack](http://wordpress.slack.com) ([sign up here](http://chat.wordpress.org)). Here is how to get started: $ git clone https://github.com/georgestephanis/two-factor.git $ npm install Then open [a pull request](https://help.github.com/articles/creating-a-pull-request-from-a-fork/) with the suggested changes. ## Changelog ## See the [release history](https://github.com/georgestephanis/two-factor/releases).