This Stamp-Sized Sensor Can Sniff Out Explosives Using RFID Tags

Detecting explosives is, obviously, an important task—but many of the sensors are large and require manual operation. So GE's tiny and affordable new RFID sensor could help automate the process, to help keep us safe without much in the way of man power. Developed in collaboration with the Technical Support Working Group (TSWG)—a task force dedicated to anti-terrorism—the device repurposes RFID tags as sensors, by applying a lick of sensing material to their side. GE is tight-lipped about exactly what they entails, merely explaining that it's developed "a sensing material that responds to explosives and oxidizers."