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Battery-free phone draws power from radio signals

Jul 07, 2017, 7:59 AM EDT
(Source: University of Washington Office of News and Information/flickr)
(Source: University of Washington Office of News and Information/flickr)

Making leapfrog towards a future that’s free from chargers, cords and dying phones, researchers at the University of Washington have developed the world’s first battery-free cell phone that draws power from ambient radio signals or light.

The working prototype, built using off-the-shelf components, can make and receive calls, text messages and even use Skype, writes UW Today.

The device requires almost zero power and can operate by picking ambient radio signals from a base station up to 31 feet away, notes Mirror. The makers plan to scale up the operating range of the phone to load it up with a visual display feature.

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