TradeMark Gunderson of the The Evolution Control Committee made this amazing rear-projected infra-red-activated faux-touchscreen mashup controller... hacked from Wiimotes.
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Mark Frauenfelder is the founder of Boing Boing and the editor-in-chief of MAKE and Cool Tools. Twitter: @frauenfelder. Come and hear Mark speak at the ALA conference in Chicago on July 1.