You know the drill by now. You step up to the cashier, push your purchases across the counter, and then slide your credit card through the reader. Then the machine beeps. “Do you have a chip?” the cashier says, even though you both know perfectly well that you do. “Right, right, I always forget,” you say, then you shove your card into the slot. You wait, and wait, and wait, and then suddenly the machine freaks out — REMOVE YOUR CARD NOW! You grab it, and walk away with your head down, leaving everything you just bought behind you. There’s got to be an easier way.