A credit card can be swiped 3-5 times on different POS machines of the same merchant, but generally it is limited to 1-2 times on different POS machines of different merchants. If you swipe your card at the same merchant's POS machine three times a month, and every time it is a normal transaction, then it is ok.
Pay attention to the rational use of credit cards when swiping cards to avoid being misjudged as malicious behavior by the bank's risk control system. At the same time, we should also pay attention to abide by the rules of credit card use and maintain good credit records and payment habits.