Smart, I had the same thing happen using a card at a gas pump, and someone was able to steal the number and pin (this was probably 10 years ago). I now have more than one card, one of which only has enough for something like gas or small purchases, so if it happens again I don't have everything wiped out.Online, i only use certain credit cards to shop, never my bank card. Had the bad experience of having my stuff hacked. No fun.