Funny that neither a concealed weapons permit nor driver's license were sufficient for employment identification, even though these had pictures on them; I had to produce a 40 year-old piece of paper with a signature which no longer looks like mine.
Hey, on mine, my signature has already faded away!
It's tattered, faded, and worn, but NWIH will I trade it in for a new one. The new ones don't say that they're not to be used for identification! My wife's card has no such clause. And, her SSN is on our Blue Cross cards, which really bugs me.