Medical monitoring device that is powered by the RF of a cellphone [#power]

Wearable microchip monitors vital signs, draws power from cell phones "The reason the system-on-a-chip device is so small and thin, roughly the same as a postage stamp, is the absence of a battery. Here is the most impressive aspect of the sensor: it draws power from the radio-frequency energy emitted by a cell phone. It [...]

Source: http://www.richardbanks.com/trends/2012/11/27/medical-monitoring-device-that-is-powered-by-the-rf-of-a-cellphone-power/

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