I don’t think it does, unless everything is RFID-ed. But it shows they did make purchases, and the date...
Printed RFID - they said ten years ago if the cost could get to 5 cents at the item level it would pay for itself - not even considering theft.
That is technically very feasible with RFID on each item associated to a printed receipt with a barcode that can be scanned at the door. The door RFID scanner can build a "manifest" of items observed and compare to the list of items scanned for the receipt. No receipt without payment. Many high value items have the RFID sealed inside the package.