Researchers (IMAGE) University of Wisconsin-Madison Caption Researchers: Zongfu Yu (left), Ang Chen (center) and Efram Khoram (right) developed the concept for a 'smart' piece of glass that recognizes images without any external power or circuits. Credit Photo by Sam Million-Weaver Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.