Re: Just curious ... how many commentards here
If you start (as I do) from the premise that the "classic" username+password authentication paradigm is broken, then you have to accept we need something new.
It is, but that's an argument for 2FA, not for some mumbo jumbo voodoo crap replacing the password. There's already a workable solution for higher end smartphones: the fingerprint reader. And I still get the ability to use the password if I need to.