do you sign your credit cards?

[M A V I C]

USPS has had this policy for quite some time. I had "see ID" on a card ~15 years ago and they wouldn't take it. The guy actually brought out some USPS manual and showed me where it said they wouldn't take it unless it's signed.

mikebw wrote:
Just don't leave it blank because then anyone can sign it and it will look legit.

Does it matter if it looks legit or not? All the USPS checks is if it's signed. I don't think most people are capable of doing any sort of visual hand writing verification.