http://translate.google.com/translate?u=http%3A%2F%2Fwww.oberwelt.de%2Fprojects%2F2008%2FFilo%2520art.htm&langpair=de%7Cen&hl=en&ie=UTF8 This is pretty cool. Cameras in daylight (or with indoor lighting) could just use IR filters to block the glare and see you anyway , but cameras meant to operate in darkness using IR would have a hard time.
The downside would be that although your face is obscured, your glow is readily apparent to the camera even at long range.