Self-service check-outs

While at Superstore today, I noticed a self-service check-out lane...so with the few items in my hand, I decided to give it a go than stand behind the person with a buggy loaded with a year's grocery supply (seriously, I don't think I ever had to buy that much grocery IN ONE SHOT). It's pretty easy to use as you just have to find the bar code of the item you are purchasing and pass it through the scanner...it even asks you beforehand how many bags you are going to use as they charge you four cents per bag...it's quite the honor system...I'm sure there are a zillion cameras directed at me just like in the casino...just to see if I used one bag or two...