There is no time limit. Because the POS machine runs around the clock, it can process transactions in real time, and there is no limit on the exercise time of credit cards. You can swipe your card at any time with a POS machine. POS (Point of Sale) is a multifunctional terminal. It can be installed in special merchants and acceptance outlets of credit cards, and connected with computers to realize automatic transfer of electronic funds. It has the functions of supporting consumption, pre-authorization, balance inquiry and transfer, and is safe, fast and reliable to use.