Two-factor Authentication using Clef

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You can now log in to your RBLTracker account using secure, two-factor authentication using Clef.

Unlike password-based solutions like Google Authenticator, Clef is two-factor that users love. With just a wave of their phone, they’re logged in to your site — it feels like magic.

Simply download the Clef Mobile App, and then register your RBLTracker account with Clef from the Profile page of your RBLTracker account. Once registered, you can log in and log out of the RBLTracker interface using your mobile device- it’s that easy!

Two-factor authentication is available to all RBLTracker accounts. Sign up Today! If you have any questions or comments about using Clef, please let us know @

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