We have had self check-outs here for a while. They have a cashier that has a podium right there and she watches, but I know that if you place an item in the bag with out scanning it, the machine says "please scan the item before placing it in the bag". It is possible, I am sure, to find a way to steal, but it is not easy.

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"When you're drowning, you don't say 'I would be incredibly pleased if someone would have the foresight to notice me drowning and come and help me,' you just scream."

John Lennon