A running battle between the U.S. Treasury and the counterfeiting efforts of drug lords and North Korea just got even more high-tech, with 3-D interactivity. Now everyone can check the authenticity of their Benjamins, courtesy of color-changing and moving images of bells and numbers.
Tiny manufacturing flaws on the atomic level might cause most companies to throw up their hands, but MIT-spinoff Verayo saw them as the key to creating the perfect anti-counterfeiting tags for everything from Walmart DVD shipments to futuristic passports. The company's radio frequency identification (RFID) tags rely upon no two chip being exactly alike on the atomic level, Technology Review reports.
Five amazing, clean technologies that will set us free, in this month's energy-focused issue. Also: how to build a better bomb detector, the robotic toys that are raising your children, a human catapult, the world's smallest arcade, and much more.