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"Fiction now meets reality with prototype contact lenses developed by Babak Parviz at the University of Washington, in Seattle. Dr. Parviz’s prototype lenses can be used as biosensors to display body chemistry or as a heads up display (HUD). Powered by radio waves and 330 microwatts of power from a loop antenna that picks up power beamed from nearby radio sources, future versions will also be able to harvest power from a cell phone."
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