Just flip it off as in give it the finger, I do it all the time when I'm in a store and they have the monitors that show you are on camera. My wife doesn't get to excited to see me do it, but what the heck I'm there shopping, I'm not in there to take anything, and since the annoy me I just give them the finger, I do the same thing with the toll cameras, shot them the bird.

I could care less that they get my picture, I just figure may as well make it entertaining.