It’s a little scary to think about criminals latching onto this idea. Wired magazine has a story about the project and a short description about how it works. The device “is simple, consisting of a circle of infra-red LEDs mounted on a headband. The infra red is invisible to The Man, but will cause CCTV cameras to flare out over the face of the wearer, obscuring his identity and making this the digital equivalent of a hooded sweatshirt.”