How do stores with self-check out lanes ensure that all products bought are accounted for?

Question

Other than an employee or two standing by, it seems to be riding on customer trust. Wouldn’t a company want to only have cashier lanes, so they can ensure that all products taken from a store are bought fairly?

In: 25

Answer 1

In Holland they do random checks after you have scanned everything. A employee drops by and scans a few items in your bag to see if you have scanned them.