Google has acquired a small startup called SlickLogin, whose product involves a unique, sound-based system for logging into websites. SlickLogins product had a website create an almost inaudible tone when you tried to log in, youd then hold up your phone to your computers speaker and it would verify that it had heard your tone and then send your credentials in. Google has been experimenting with alternatives to the password for quite some time. Last year, two Google researchers published a research paper detailing how a ring could be tapped to a PC to verify your identity.