I know some people.... *goes all Tony Soprano*
The first time I traveled without benefit of parental supervision was overseas and my grandparents (both sets) took me aside and told me to never, EVAR carry anything valuable in my pockets or purse. When I got caught in a gypsy mob in Italy I was glad for the advice. If they were going to get my money, they'd have to buy me dinner first.
It sucks so badly that they could use your card, though. I mean, it's one thing to steal one, quite another to be able to pull the PIN from the ether and get money with it. We had a company credit card stolen at the DFW airport a couple of years back and the idiots went in to WalMart and bought gift cards with them (this happened at Thanksgiving). Even with the cameras and everything Wal-Mart said they could do nothing but hand them over to the police. Since I'd reported the card stolen, I didn't have to pay for it... Wal-Mart did because they had to honor the gift cards.