Indian designer Sahil Karkhanis has come up with what he calls the Manta Ray, which is basically a portable, interactive presentation system which will add more worth to your business, although those who do plenty of promotions and even school/college presentations might want to check it out (if the concept materializes, that is). An infrared imaging base unit will work in tandem with a couple of infrared pointers, and oyu can attach this multi-touch presentation system to a range of portable devices including laptops, netbooks or tablets, while a data projector turns any suitable flat surface into a touch sensitive, interactive surface. We sure hope that if this ever makes it to the real world, it would have some sort of heavy duty battery life going on.