credit card risk control interception: when a user swipes a credit card, it is suggested that the risk control interception is because the current transaction is risky or illegal, so the transaction will be intercepted by the bank's risk control system. In this case, the user can choose to change a POS machine for credit card consumption. As long as the credit card consumption is successful, it means that the user's credit card status is normal, and the problem is the last credit card transaction. However, the replacement of multiple POS machines still fails to swipe the card. This situation indicates that the user's credit card is controlled by the wind, and after the credit card is controlled by the wind, it cannot be traded normally.