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Best emerging tech: Powercast
Powercast could forever change the way we interact with our handheld gadgets. Powercast uses the energy from a transmitted RF signal to power small, battery-operated devices--cell phones, wireless PC peripherals, and hearing aids may never go dead again. The transmitter can be placed in anything that plugs into the wall (lamps, alarm clocks, and so on) and can send a low, continuous signal to small gadgets that contain an embedded receiver. Charging batteries may never be necessary again.
Photo credit: Phil Ryan/CNET Networks
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