4 ms·
TOTP algorithm is open, has RFC. Check Google Authenticator Wikipedia page for OSS clients. I guess phone number is needed for the secure reset. In the case yo
by miohtama 12y ago
TOTP algorithm is open, has RFC. Check Google Authenticator Wikipedia page for OSS clients.
I guess phone number is needed for the secure reset. In the case you lose the device this would render your account inaccessible.
- probably_wrong 12y agoI do have an OSS client, but the very first step to enable Gmail's 2FA is to give your phone number. I agree that there are good reasons for asking that, but the comment above apparently raises a good point, namely, that you apparently cannot enable 2FA without giving Google your phone number.