On: How do you handle 2FA?

[PranavBerry]

If the phone not having a internet/network coverage was a problem, my idea could be useful. It also makes the phone a kind of hardware token, a user can login only if he has his phone.

However from the responses it looks like this is not an issue and I'll probably not work further on this idea.

[chinathrow → PranavBerry]

Yeah I really think it's a non-issue: 2FA apps such as Authy or Google Authenticator already work if the phone is offline.