If you have a key fob and have ever been curious about the circle arrow button and its function, here's what it means.

If you have a newer car, you may have a battery-powered smart key with a lot of really convenient features. But what do you do if that battery dies?

HOW TO USE DIGITAL IPHONE CAR KEY. Exactly how the virtual key works might depend on your model of car. For instance, some cars will let you use it to remotely lock and unlock your car.

In addition to showing off some great new CarPlay features, the company announced that car keys will soon be supported by 13 new vehicle brands inside the Apple Wallet app. Here’s what’s coming.