In this conception of computing, the input and the output occupy the same space — unlike a conventional computer, in which the mouse and computer keyboard are separate from the screen, where the changes appear. Even the Nintendo Wii game console, which responds to gesture and motions, often projects that motion onto an on-screen figure.
Mr. Underkoffler said this gesture technology was already being used in Fortune 50 companies, government agencies and universities, and he predicted that it would soon be available for consumers. “I think in five years’ time, when you buy a computer, you’ll get this,” he said.