Hacker News new | ask | show | jobs
by andrewaylett 4672 days ago
No: if you use (for example) Google Authenticator, your phone need never connect to network. The QR code you scan contains all that is needed to generate the code given the current time. Older versions of the Authenticator app didn't even have network access permissions; newer ones do because Google added the ability to automagically set up a Google account for 2FA.