do you sign your credit cards?

[M A V I C]

Doc wrote:
[quote=DRR]
This is true for almost ALL credit/charge cards:

The card is not valid until signed. "See ID" technically invalidates your card.

"See ID" -- or in my case, "Ask for Photo ID" -- is a signature for these purposes. It's evidence of provenance regarding the identity of the bearer used for the purpose of authenticating the instrument.

It's perfectly legitimate to have it on your cards in lieu of an autograph.
Actually, it's not legit. If the card isn't signed, it's not valid. If a card isn't signed by an authorized signer on the account, it's not valid. So "See ID" or some other person's signature are both invalid.