The bank card number merely identifies the card, which is then electronically associated by the issuing organisation with one of its customers and then to the customer's designated bank accounts.
If the customer does not make their pick up in time, it will take a further 14 days to refund automatically to the bank card they made the purchase with.
As well as the multipurpose bank card version, anonymous cards (also smart cards) are available for the use of people without bank accounts, such as children and tourists.