Apple recently acquired AuthenTec for $356 million, a company at the forefront of face/object recognition.
See here: http://thenextweb.com/apple/2012/08/...red-authentec/
It seems very likely that we will be seeing this feature in the next iPad 5, among other goodies.
See here: http://www.patentlyapple.com/patentl...t-recognition/
The next couple of upgrades may pleasantly surprise us all!