CarKey

CarKey is a digital key system developed by Apple for use with supported automobiles.

Development history
The technology was secretly introduced into iOS 13.4 for testing with the 2021 BMW 5 Series. It became publicly accessible on July 15, 2020 through the Apple Wallet app in iOS 13.6, iPadOS 13.6 and watchOS 6.2.8.

Supported vehicles

 * BMW: 2021 1, 2, 3, 4, 5, 6 and 8 series; and X5, X5M, X6, X6M, X7 and Z4.