There were more than a couple of booths dedicated to promote the wireless charging technology. We visited one booth which had representatives from the Wireless Power Consortium(WPC) demonstrating the evolution of the Qi wireless charging technology. PowerbyProxi is one company which had a wireless charging product on display. It was basically a flat rectangular piece of plastic which had the ability to charge one or many devices at the same time. So while the Qi specification 1.- and 1.1 is capable of charging one phone at a time, PowerbyProxi had developed a charging pad which allowed you to charge multiple phones or mobile devices at a time. Thanks to the thin charging circuitry, the miniaturised wireless receiver of this pad is located in the back cover of the phones.