My cousin showed me that system back in 2009 when I was visiting. Fantastic system.
He said that around 1 times in 10, the cashier would actually check your items to make sure you weren't stealing anything- and if you had any discrepancies, you could expect to have the cashier check you every time for the next 2 months.
The main principle is that the workload of scanning the items is spread out to the customer, who isn't being paid for their time, rather than the cashier, who is.
He said that around 1 times in 10, the cashier would actually check your items to make sure you weren't stealing anything- and if you had any discrepancies, you could expect to have the cashier check you every time for the next 2 months.
The main principle is that the workload of scanning the items is spread out to the customer, who isn't being paid for their time, rather than the cashier, who is.