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.
Actions & Filters
Here is a list of action and filter hooks provided by the plugin:
two_factor_user_authenticatedaction which receives the logged inWP_Userobject as the first argument for determining the logged in user right after the authentication workflow.
Get Involved
Development happens on GitHub. Join the #core-passwords channel on WordPress Slack (sign up here).
Here is how to get started:
$ git clone https://github.com/wordpress/two-factor.git
$ npm install
Then open a pull request with the suggested changes.
Screenshots
Two-factor options under User Profile. 
U2F Security Keys section under User Profile. 
Email Code Authentication during WordPress Login.
Reviews
Contributors & Developers
“Two-Factor” is open source software. The following people have contributed to this plugin.
Contributors
“Two-Factor” has been translated into 17 locales. Thank you to the translators for their contributions.
Translate “Two-Factor” into your language.
Interested in development?
Browse the code, check out the SVN repository, or subscribe to the development log by RSS.
Changelog
See the release history.