For Robert Xiao, there's more to an ordinary table than meets the eye. He and his colleagues at Carnegie Mellon University have developed technology that can transform the table - and any other flat surface - into an interactive touch screen. Xiao calls his device, "World Kit". Instead of pulling a cookbook off the shelf, a few swipes of a hand produces an interactive recipe guide. Xiao's favourite example of "World Kit's" usefulness applies to anyone with a television..moreless
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