Spare Wi-Fi Signals Charge Batteries A new article has been published by Fiona MacDonald in www.sciencealert.com on June 9th, 2015. She says, “Researchers in the US have tweaked a regular Wi-Fi router and made it capable of continuously powering a battery-free surveillance camera. Even better, their work didn’t interfere with the router’s data transfer speeds.” As you know, electromagnetic waves does not only transport information, […]