​What are you supposed to do when you pull out plastic to buy something at a store these days? You’ve probably noticed that plenty of stores have terminals that have a slot for chip-enabled credit cards, but sometimes when you try to use it, an anxious store clerk will yell something like, “Nope, we don’t take chips yet. Please swipe.” Back in October, a much-ballyhooed deadline marked the great switch from old-fashioned magnetic stripe cards to newer EMV chip credit cards. Well, that was the plan anyway. Despite some slow, steady progress, most of us are still swiping our stripes instead of dipping our chips several times each week.