Perhaps I meant it as a half-rhetorical question; I'm not the only person I know who doesn't have a cell phone, and if you take moment to consider it, I'm sure you'll realize that you know some people in the same position.
There are in fact significant demographics - children and the elderly - where cell phone adoption is rather low. Ironically enough, these are the very groups where enhanced security measures may be most useful.
> if you take moment to consider it, I'm sure you'll realize that you know some people in the same position.
Actually no, I can't think of anyone. Buy an iPod Touch and install Google Authenticator, you will have all the inconveniences of not having a phone but enjoy the security benefits of two-factor authentication.
There are in fact significant demographics - children and the elderly - where cell phone adoption is rather low. Ironically enough, these are the very groups where enhanced security measures may be most useful.