It’s the question that often comes when you hand over your credit card at the store: what’s my zip code? Next time you’re asked, you may want to think twice before handing over the information. You have to do it when you pay at the pump, but inside a store you have no obligation to give up your zip code.

It’s the question that often comes when you hand over your credit card at the store: what’s my zip code? Next time you’re asked, you may want to think twice before handing over the information. You have to do it when you pay at the pump, but inside a store you have no obligation to give up your zip code.