In self-checkout systems, the customer is typically required to: Scan product barcodes where these exist. Weigh products (such as fresh produce) without barcodes and select the variety on a touchscreen display. Place all scanned items into a "bagging area".

Can you steal from self-checkout?

How Common is Self-Checkout Fraud? A recent survey found nearly one in five shoppers polled said they had stolen something from a self-checkout lane. Industry experts estimate that thefts at self-checkout tills have doubled within the last four years.

How do self checkouts prevent theft?

Another effective technique to thwarting theft is to review customer receipts at the door. By verifying the cart's content with a receipt, you can assure each item has been paid for. A common self checkout theft technique is to purchase an expensive item and ring it up as something much cheaper.