James Patten and Ben Recht created AudioPad, which is a mixing board for DJ’s. The functions are projected onto the tabletop, and the user selects them by moving checkers around. The checkers are tracked by an antenna array. It’s a really neat interface, and it’s almost like having many different mice to work with, instead of the computer idiom of having one mouse that can transform itself into an object by selecting the object. For starters this gives us with two hands more expressive powers, and it also lets two or more people collaborate.

It occurs to me that painters and 2d artists generally work with one hand, whereas sculptors sometimes work with two.