Once done shopping, customers simply exit the store rather than going through a traditional checkout process. Amazon's software will note that they left, process the data it has from their visit, total up the items, and charge their Amazon account.
When Machkovech finally received his receipt, he said he discovered he had been charged for both the loose banana and avocado left outside the restroom, but not the items he took after changing.
His receipt also took several hours to process, with Amazon estimating Machkovech had spent more than two hours shopping, suggesting his wardrobe change had done the trick.