I support KK in raising the issue and I don't believe for one minute that (he/ she) would have posted this without good reason. Perhaps the best thing would have been to ask the shop for CCTV as well. It's a vile habit and I've witnessed people just walk away too. It's an offence and if a post like this makes people stop and think, then good. Perhaps the best thing is to be obvious about taking photos. And maybe get the camera out sooner. People post photos and videos on the forum frequently, of people who's behaviour is suspect.