1, credit card consumption risk control;

2. Check the flow of cash installment funds.

3. After spending with the card, the user needs to keep the consumption voucher and invoice for checking. At this point, most banks have not fulfilled their obligation to inform in advance. Let's look through the credit card authorization agreements and regulations of various banks to see if there is such an eye-catching reminder: let users pay attention to keeping the consumption vouchers after each consumption. Some banks will cash in installments and borrow cash in advance to remind users that they need to keep consumption vouchers, invoices and other materials, but they do not indicate how long they need to keep them.