Caitríona Redmond: Are self-service checkouts risky?

Self-service checkouts have their fans, and some consumers prefer this shopping experience over standing in line at the conveyor belt. For those who opt go to virtually staff-free it can be a quicker way to get the shopping done, particularly if using a handheld scanner.
Do you use the self-service checkout in your local retailer? If so, you will have noticed plenty of CCTV cameras — either mounted on the ceiling, or suspended on a long stick.
The camera is pointed at the checkout and monitors what has been scanned and whether you have completely scanned what you intend to buy.