This does not work for FR that does not observe IR. Which is most FR systems, because most FR systems have to use legacy video hardware several years, often a few camera generations, back. Including wholly optical CCD systems.<p>However, a similar fashion accessory does an even better job: some fashion hats have blinky LEDs on them; blinky LEDs cause a camera's components to adjustment for the unusually bright light, which are then gone, than back again. The mechanism in most security cameras cannot adjust for the lighting changes as fast as the LEDs are blinking, causing no good captures of the face beneath the blinkly LEDs.
> Health concerns. It is unclear if an attacker would get his eyes and face skins hurt, under the exposure of such a large amount of infrared in a long period of time. If this is true after confirmation from physicians, attackers may not dare to launch attacks with this method, worrying about their health.<p>As a physician, I don't understand this to be a serious concern. UV light is the opposite side of the viable spectrum from IR<p>This is fascinating. What a great idea.