What keeps the cusomers from putting some items in grocery bags without ringing them up? It seems to me that people would start cheating and, oh say, not ring up about every third item in their shopping cart When you scan the product, the bar code also scans the weight of the product and then you put the product into the bag which is on a scale. If you put something that hasn't been scanned, the machine alerts the one attendant at the island and also very loudly alerts you and shuts the process down, until the product is scanned.
ah, very clever. I like it. I would think it wouldn't be long before every grocery store in the country has systems similar to this