Just come across this video. Apologies if already posted but it made me laugh. Actually it is quite convincing. Obviously nonsense, but nonetheless would be pretty cool if it actually was able to do that. Then they wouldn't need these million dollar body scanners at the airport - all the security folk would just have iPhones!
http://www.liveleak.com/view?i=ace_1263502461
http://www.liveleak.com/view?i=ace_1263502461