Anyone know when the new iOS 15 will include option of using phone as key I seem to remember a while back that it was planned

I have a iPhone 12 Pro worked first trip then kept saying error and remove anything from tray , tried without case (MagSafe compatible) still the same . Tried other way round and face down sideways everything but not worked , received car 2 days ago and ended up dead phone and had to find a contactl...