Ok, if there's a concern about still having to use some password for the email account, maybe the right way to go would be to build apps for all platforms. It w

Ok, if there's a concern about still having to use some password for the email account, maybe the right way to go would be to build apps for all platforms. It would be like the Google's two-way authentication, only simpler? Am I missing something? I'm missing something crucial, aren't I? ;)