For Visa, the merchant should ask you to sign the card anyway. "See ID" is the same as no signature, which means the card is invalid. Other credit card compan

For Visa, the merchant should ask you to sign the card anyway. "See ID" is the same as no signature, which means the card is invalid. Other credit card companies are probably the same. > “See ID” > Some customers write “See ID” or “Ask for ID” in the signature panel, thinking that this is a deterrent against fraud or forgery; that is, if their signature is not on the card, a fraudster will not be able to forge it. In reality, criminals often don’t take the time to practice signatures. They use cards as quickly as possible after a theft and prior to the accounts being blocked. They are actually counting on you not to look at the back of the card and compare signatures; they may even have access to counterfeit identification with a signature in their own handwriting. > In this situation, follow recommended steps listed above under Unsigned Cards > Unsigned Cards > While checking card security features, you should also make sure that the card is signed. An unsigned card is considered invalid and should not be accepted. If a customer gives you an unsigned card, the following steps must be taken: > • Check the cardholder’s ID. > Ask the cardholder for some form of official government identification, such as a driver’s license or passport. Where permissible by law, the ID serial number and expiration date should be written on the sales receipt before you complete the transaction. > • Ask the customer to sign the card. > The card should be signed within your full view, and the signature checked against the customer’s signature on the ID. A refusal to sign means the card is still invalid and cannot be accepted. > • Ask the customer for a different signed Visa card https://usa.visa.com/dam/VCOM/download/merchants/card-acceptance-guidelines-for-merchants.pdf https://usa.visa.com/dam/VCOM/download/merchants/card-accept...