in iPhone edited 12:21PM Apple could soon let users unlock their cars using the Ultra Wideband chip in the iPhone thanks to an updated Car Key spec. CarKey gaining Ultra Wideband support CarKey is an API that allows users to unlock and control compatible cars using only their iPhone. Apple released the feature with iOS 14 alongside launch partner BMW. On Tuesday, the Car Connectivity Consortium (CCC) announced an update to the Digital Key spec used by Apple's CarKey. Apple is also a member of the CCC. According to Businesswire, Digital Key 3.0 will include Bluetooth Low Energy and Ultra Wideband connectivity in the update.