Remember when @Costco created the “honor system” at Self Checkout and allowed shoppers to scan their items with the hand wand? And you know how at the exit the workers looked at receipts? They would count the items. If you had 12 items on your receipt and 12 items in the basket you were good to go. Well people capitalize on that system by scanning the cheapest items 12 times or as one worker said “ miss scanned” 11 items So now because of People Behaving Badly” Only the workers can scan at self