“A 2015 study of self-checkouts with handheld scanners, conducted by criminologists at the University of Leicester, also found evidence of widespread theft. After auditing 1 million self-checkout transactions over the course of a year, totalling $21 million in sales, they found that nearly $850,000 worth of goods left the store without being scanned and paid for. The Leicester researchers concluded that the ease of theft is likely inspiring people who might not otherwise steal to do so…. As one retail employee told the researchers, ‘People who traditionally don’t intend to steal [might realize that] … when I buy 20, I can get five for free.’

https://marginalrevolution.com/marginalrevolution/2019/08/how-honest-again-is-big-business.html#comments