A new generation of cheaper, passively powered smart tags could accelerate NFC adoption very soon. Developed at Sunchon National University and Paru Printed Electronics Research Institute in Korea, the circuits could be printed in a similar method to newspapers, but it's the inclusion of the rectenna that makes the new chip technology so appealing. The combination antenna and rectifier can pick up residual radio waves from your phone to power itself. This new technology could apparently drop the cost of installing NFC to as little as one penny per unit, while offering up additional two-way functionality over its RFID rival. And if there's a speed boost in the process, well, all the better.