Authy is the easiest and fastest way to add strong 2 Factor Authentication to your WordPress blog.

Add Authy two-factor authentication to WordPress. Users opt in for an added level of security that relies on random codes from their mobile devices.

Adds 2-factor authentication to your site. Use Google Authenticator or Authy for enforced security.

Google Authenticator(2FA) works out of the box on your wordpress site without any third party service involvement. Two Factor Authentication made easy. Supports Google Authenticator and Authy Authenticator App.