For those of us here in the UK,
Photographer's Rights, http://www.sirimo.co.uk/2009/05/14/u...ers-rights-v2/
Print a few out and stick 'em in the gadget bag. I get stop searched quite a lot here in Manchester but as long as you're polite and cooperative, I find that I can then turn the tables, so to speak, and educate police officers into our technological field. Then hand 'em a print of the above. And tell 'em that iPhones are more of a threat!
A quirky little thing from our old friends, Amateur Photographer,
http://www.amateurphotographer.co.uk...ws_300122.html
Not sure of photographer's right for the rest of the world but the U.S. has always been a b***dy nightmare.