Impossible, Letterman last night confirmed iPhone will have a finger scanner.(there is a Wiener joke at the end).
http://thehill.com/video/in-the-news/318431-late-night-smash-healthcare-reform-weiners-new-iphone
(U have to put up with 20 seconds of health care reform joke)
Are you serious? What knowledge of Apple's decisions does LETTERMAN have, that guy is an idiot