 Has a computer chip on that card. It's supposed to keep you safe. You know, bad guys, they don't know about computer chips yet. But then you get to the register and they're like, I'm sorry, sir, we're swiping today. Then the next time you try to swipe, they be like, whoa, whoa, whoa, put the chip in. You don't blow this whole place up if you don't put that chip in.