How does a landline terminal process transactions?

A landline terminal primarily processes transactions by swiping a card through a magnetic strip. This method involves the physical interaction of inserting or swiping a card that contains a magnetic stripe. When the card is swiped, the terminal reads the encoded information, which typically includes the card number, expiration date, and other relevant details, to facilitate the transaction.

This method is classic in point-of-sale systems where connectivity is achieved through a direct line into the terminal, allowing for secure and immediate processing of credit or debit card payments. The reliance on a physical card and magnetic strip for transaction processing is integral to the operation of landline terminals, distinguishing them from mobile apps or wireless technologies, which are not essential for their functioning.