Does anyone know how this works? It reminds me of a RSA SecurID but since it's o... | Hacker News

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		smackfu on June 12, 2012 \| parent \| context \| favorite \| on: I know someone whose 2-factor phone authentication... Does anyone know how this works? It reminds me of a RSA SecurID but since it's only in software, can't it be reverse engineered?

mryan on June 12, 2012 | [–]

It uses TOTP - http://en.wikipedia.org/wiki/Time-based_One-time_Password_Al...

abraham on June 12, 2012 | [–]

The app is open source https://code.google.com/p/google-authenticator/

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