I can't really fully describe Sixth Sense—a system that projects information over the real world, giving you information about it—or its potential in a line. Or at all. You have to, you must watch it:
(If you have the time, you can go through the whole video and Pattie Maes' explanation. If not, go to minute 3:10, where the cool demonstrations begin. There, Pranav Mistry—the MIT student who has implemented Sixth Sense—shows how it works)
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