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Celluon has invented a new type of mouse that reads simple finger movements as mousing commands. The evoMouse also appears to respond to finger commands common to smartphones, like zooming. It's pretty cool, but I'm waiting for a Minority Report glove.
http://www.celluon.com/products/laserkey1_4.htm?sm=2_1 via DVICE
When a casual gesture can actuate your computer, you need a different control system.
If you're going to be vain enough to call your product the "EvoMouse", you should probably have better grammar in your own fart-sniffing demo reel.
I'm probably being unfair, though - I wouldn't want this anyway. I'd rather have a tactile experience, and I'm sure that buying a physical mouse or keyboard will continue to be far cheaper.
He did a Ted talk some time ago on his 'Sixth Sense' interface ideas...
http://www.pranavmistry.com/
Having said that, I fear it's going to be horribly expensive, awkward and unreliable (and the latter two points will lead to a constantly high price point). Not to mention MrPumpernickel's rant, which I completely agree with.