Some interesting stuff, some scary stuff. I was in El Paso a few months ago and noticed a police car with some strange equipment trawling through a mall parking lot. Did some online research and found out that El Paso Police had bought license plate cameras, so they can sweep through areas with high concentration of cars looking for stolen vehicles.
But this stuff? Wow. Fingerprint reading at a distance, measuring your scent, etc. A couple of them are dead-ends for long term recognition because your irises and ear geometry change over time.
Makes me want to start wearing a baseball cap with built-in infrared LEDs.
http://www.wired.com/dangerroom/2013/01/biometrics/?utm_source=feedburner&utm_medium=feed&utm_campaign=Feed%3A+wired%2Findex+%28Wired%3A+Top+Stories%29&pid=1775&viewall=true