http://www.engadget.com/2011/01/05/microsoft-shows-off-next-generation-of-surface-has-per-pixel-to/If you leave aside all the stupid arguments about things like:
"they should be focusing on tablets",
"who would spend 7k on that"
"android/ipad/whoeverthefuck is better/cheaper/whocares"
blag blah blah.
The thing is, they are actually making some scifi stuff come true it seems. You know how in spy/scifi movies, the hand scanner for access to something is a color lcd screen that they just put their hand on, and then you see their whole hand and finger prints when they take their hand away?

Or how holding a piece of paper up the screen to scan it?

Its not a camera behind the lcd. its every pixel sensing via infrared.
again, its a long way off from being "you just use it and its magic" but, its getting more and more of the elements to get there it seems.