Not yet. I did forget one card at a restaurant one time. I canceled it right away.
Max credit card liability is $50 by law but most cards have none so that's one place where I'm not too worried (or just ignorant
).
I do shred every piece of paper I get with an account number on it, including utility bills. Most ID theft are either someone you know or dumpster diving. I also don't carry my social security card in my wallet.
My next project is having a fake wallet with $60 and some old cards, in case of a mugging or some pick-pocket.
What do you think of the European system, where signatures aren't enough: PIN's are typically required for gas stations, etc.
I do have a problem showing ID or giving my SSN when it's not required by some rule...