Some of you may be interested to hear of my recent experience of (Sainsbury's) supermarket CCTV.
I noticed that a bottle of booze costing £8.50 appeared twice on my till receipt even although I'd only bought the one. So I went back the next day with said receipt. At the customer service counter the assistant called the supervisor who took the receipt to the security desk at the entrance. I couldn't see what they were doing but I would guess looking up CCTV files. When I looked down the line of checkouts I could see a wee CCTV globe above every till area. After 10 mins the supervisor came back and paid me my £8.50 clearly satisfied I wasn't a con artist.
So I'm thrilled that CCTV worked to my advantage this time, but it does make you feel a little uncomfortable to know your being 'watched' so much.