Fastcompany.com is marketing a high-tech solution to keep you from being caught in embarrassing photos while out enjoying a few cocktails.
“Photoblocker” is a beer holder with a build-in-photo flash and electronics that detrect when any digital camera flash is about to go off in the vicinity. At the exact second a flash goes off, the beer holder sets off a counter-flash. 
The resulting photo shows nothing but an overexposed blob of light.
- If they had these back in my college days, today I wouldn’t have a single picture of any of the guys I hung out with!