Signing a credit card receipt is not for signature verification. You are signing a contract that you agree to pay under the terms of your card agreement. Ther

Signing a credit card receipt is not for signature verification. You are signing a contract that you agree to pay under the terms of your card agreement. Therefore, it doesn't matter how you sign as long as it was you. If you sign a multimillion dollar recording contract with a smiley face, you are still agreeing to the terms of the contract. Your signature doesn't have to match anything. If signatures were for verification, then they wouldn't have you sign the back. That would be like writing your login on post-it note stuck to your computer.