The POS's main responsibilities include figuring up an order's total cost, collecting payment, and recording the transaction. First, a list of the things that need to be bought is made. This would entail using a barcode scanner to input the products into the POS in a supermarket, for instance. All of the information, including the name and quantity of the goods being bought, will be recorded by the software. When everything has been loaded, the payment process begins. There are typically two choices: using a card or cash for payment. Paying with cash entails giving the cashier the appropriate coins or notes or entering them into a machine. On the other hand, card payments can need swiping, inserting, or tapping the card—virtual or physical—onto the card reader. At this point, the point of sale will establish a connection with the cardholder's bank, maybe request a PIN, determine whether there are sufficient funds to complete the transaction, and finally verify if the payment was accepted or declined. All of this takes place in a matter of seconds, and the card transaction is confirmed by the creation of a receipt. Online transactions follow a slightly different procedure. When placing a purchase, you typically need to select the checkout option and provide your payment information if it hasn't already been automatically saved. This includes inputting card details, like the number or numbers, and your address. Your bank might also get in touch with you prior to finalising the transaction to make sure you're ready to move forward with the payment.