After the credit card is finished, we will all sign our names on the back of the credit card. The personal signature of the credit card is the proof of approving the transaction and agreeing to deduct the corresponding amount from our account. Merchants must sign the back of check card before allowing customers to pay, and banks must also check the signatures from merchants before entering the account. So, what are the functions of credit card signature? What are the functions of credit card signature? 1 ensures the safety of cardholders. Some credit cards do not need to enter a password, but only need the cardholder's signature to spend. The purpose of signing is firstly to confirm that you are the cardholder, and secondly to show that you confirm the consumption. In order to ensure the safety of domestic cardholders, the password input function has been added. The customer has the right to initiate bill adjustment to the issuing bank within 180 days. Simply put, if you don't spend money, you ask the merchant to provide a signed receipt, but the merchant can't provide it, or after verification, the purchase order is not signed by the cardholder or the non-cardholder, and the merchant can only refund the money to you. 3. Ensure the credit card amount. When swiping a card, there are indeed salespeople who maliciously input more money than when spending. Therefore, if the customer signs the POS form, he can get an extra guarantee and audit himself. 4 After-the-fact inspection For example, for businesses, if consumers have objections after consumption, for example, they think that they have swiped the consumer's card. Merchants can also produce a consumption receipt, which proves that it is the result of consumption signed and confirmed by the merchants, thus proving that the merchants are not responsible. The above is all the contents of this article about why credit card consumption should be signed, which plays a great role. I hope I can help you. When signing, check whether the card number and amount listed in the consumption bill are correct, pay attention to whether the consumption currency and the amount expressed in words and figures are correct, and ensure that the signature on the bill is consistent with the signature on the back of the credit card.