|
Vehicles which support Digital Key Plus (i.e. X5 LCI) have 2 remote control receivers in the interior and 4 remote control receivers in the exterior. All receivers are compatible with Bluetooth and UWB.
To locate the position of the Digital Key Plus, a process called trilateration is used, where the distance of the signal up to 3 receivers are used to measure the radii. The error of margin is approximately one centimeter.
This means there is no need to be in a specific position to start the car.
For vehicles which have Digital Key, NFC is used to authenticate and open the doors. Starting a car requires placing the device on a wireless charger located within the car. This might pose a bit of a problem with the Apple Watch.
|