benjaminpalmer:

Whoa. “This little box has, inside it, some kind of circuitry that harvests WiFi energy out of the air and converts it into electricity. This has been done before, but the Airnergy is able to harvest electricity with a high enough efficiency to make it practically useful: on the CES floor, they were able to charge a BlackBerry from 30% to full in about 90 minutes, using nothing but ambient WiFi signals as a power source.” (via ianwestcott :OhGizmo)

So I could plug this into my iPod Touch and recharge it with the wifi signals it emits. Endless power cycle. Well not really, that won’t work but it would be nice.