Your car probably came with a traditional metal key that you almost never use. In fact, if you have a modern key fob, there's a good chance that a tiny mechanical key is hiding inside it right now.
You may have seen the little release button on the side of the fob without ever knowing what it does. That key isn't leftover technology. It's there for a very specific reason: when the electronics stop working, the old-fashioned key can still get you into the car.
