Modern two-factor that people love to use: strong authentication without passwords or tokens; single sign on/off; magical login experience.
Google Authenticator and Best Enterprise Grade Two Factor Authentication. Fully supported, Latest Authentication methods. Remember Device,Authy,Email.
Authy is the easiest and fastest way to add strong 2 Factor Authentication to your WordPress blog.
LaunchKey eliminates the need and liability of passwords by letting you log in and out of WordPress with your smartphone or tablet.
Securio WP-Login allows you to secure the wordpress login by tracking brute force attempts and by allowing the enabling of Multi-Factor Authentication
Secure Login using Voice Biometrics for your WordPress site.
This plugin enables CryptoPhoto authentication for WordPress logins.
Secure login to your site by tapping just one button on the phone, no password required.
Add Two Factor Authentication for WordPress using your smartphone or tablet and the Free Tokenizer service (tokenizer.com).
Sovay secures your identity and your WordPress site logins. Authenticate once and securely access all your sites — without password hassles.
Enables your users to log in to your site without manually entering the password. Instead, user just taps one button on his phone.
Make usernames and passwords obsolete. SnapID identifies and authenticates when you send a text message. Completely secure, incredibly convenient.
UNLOQ provides a free, easy to use and integrate, strong authentication systems that replaces passwords with your phone.