When you unlock a phone, step into view of a security camera or drive past a license plate reader at night, beams of infrared light – invisible to the naked eye — shine onto the unique contours of your face, your body, your license plate lettering. Those infrared beams allow cameras to pick out and recognize individual human beings.
PHOTO ESSAY: Seeing the invisible – how AP photographers captured infrared technology … from the Independent David Goldman,Ng Han Guan,Felipe Dana and Dake Kang
