On Tue, Jul 03, 2012 at 02:57:58PM -0600, Didier Raboud wrote: > Actually, the reverse might be the most practical solution to the problem at > hand: require people who don't want to be pictured to carry a red T-shirt, a > sticker on their name tag or whatever visible to photographers. It has been my experience that opt-out systems do not work. At all.