If the reason for this is too many passwords, the answer is a central auth service, not new auth factors. They should be working on a privacy-oriented protocol

If the reason for this is too many passwords, the answer is a central auth service, not new auth factors. They should be working on a privacy-oriented protocol and network, not making yet another independent auth mechanism. Not to mention this only works for smartphones! What happens when I need to log in at Kinko's?