Todos estamos esperando a que la tecnología sea independiente del cable de la electricidad. Que los aparatos que realizan funciones esenciales tengan autonomía es deseable para que el uso de la tecnología pueda crecer en prestaciones. En este artículo del MIT podemos ver el inicio de un camino para ello.

Artículo:
A cell phone that never needs recharging might sound too good to be true, but Nokia claims that it’s developing a prototype device that draws enough power from ambient radio waves to keep a cell-phone handset topped up in standby mode.

Ambient electromagnetic radiation–emitted from Wi-Fi transmitters, cell-phone antennas, TV masts, and other sources–can be converted into enough electrical current to keep a battery topped up, says Markku Rouvala, a researcher from the Nokia Research Centre, in Cambridge, U.K.

Rouvala says that Nokia’s prototype can harvest up to 50 milliwatts of power–enough to slowly recharge a phone, or keep it running in standby mode. “You can basically have it on standby indefinitely,” he says.
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http://www.technologyreview.com/communications/22764/?nlid=2088