First, after handling the bank card, you must sign on the back of the card. When swiping a card in a shopping mall, don't let the bank card leave your sight, and pay attention to the number of times the cashier swipes the card, so as to avoid misreading or excessive swiping.

2. When swiping the card to enter the password in the shopping center, you should try to block the operation gesture with your body or the other hand to prevent the criminals from peeping.

3. When receiving the purchase order and card returned by the cashier, carefully check whether the amount on the purchase order is correct and whether the card is really mine.

4. Keep the transaction documents properly. If there are abnormal situations such as repeated card deduction in the process of credit card consumption, you can contact the bank in time with the transaction documents and statements. If you cancel the credit card transaction and change it to cash payment, you should ask the merchant to tear up the reserved credit card shopping list and properly keep the cash payment voucher.

5. After receiving the bank card statement, check the usage of the card in time. If in doubt, you can call the bank's customer service hotline for consultation.