The signature on the back of a credit card cannot be altered, and the signature is an important proof of payment verification.

Domestic credit card consumption confirmation methods are generally divided into two types:

① Credit card signature consumption;

② Credit card payment password plus signature.

If there is any objection to the signature:

(1) Require valid certificates such as ID cards;

(2) Re-signing must be consistent with the signature on the back of the credit card and the reserved signature font;

③ Inconsistent signatures may lead to payment failure.