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Login into any site by pointing a phone at the computer

Posted January 15, 2015

Waltz is a plugint that allows anyone using Google’s Chrome Web browser on their desktop to log into any site, simply by pointing their phone at their computer.


A mobile app (Clef) sends an encrypted key from a user’s phone to the desktop computer, via the phone’s camera. That key creates a digital signature — using the widely used RSA algorithm — that allows websites to recognize users from their phone, instead of a typed-in password.

The plugin allows users to access sites with a single login and a single log out. If users lose their phones, they can get a temporary, 50-digit password from the Clef website that allows them to log in while they get another phone.

Sources: Waltz, Clef

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