2. If you use a debit card, you can only spend within the deposit limit, and you can't overdraw. If you use a credit card, you will spend it first and then repay it.
Card swiping process: the magnetic stripe of the bank card should be swiped across the track of the POS machine, and then the amount should be entered, and then the password should be entered by the customer. The POS machine will print out the purchase order, give the merchant stub of the purchase order to the customer and retrieve it, and link the customer who signed the purchase order with the customer to complete the card swiping operation.