The MINI Digital Key uses "Near Field Communication" (NFC), a mobile standard for wireless data transfer between two devices within a distance of a few centimetres. To unlock the driver's door using the MINI Digital Key, hold the top back of your smartphone or your Apple Watch near the door handle (about 2 cm) until you see a confirmation on your mobile device. To start the engine, place your mobile device in your MINI's smartphone tray and press the Start-Stop button. The MINI Digital Key Plus, on the other hand, uses "ultra-wideband" (UWB) digital mobile technology and Bluetooth®. When you approach your MINI, it is automatically unlocked, starts a welcome scenario and activates all functions for the vehicle start. To start the engine, your mobile device must be in the passenger area. The availability and the range of functions of the MINI Digital Key can vary depending on the country of delivery, the model and the equipment of your MINI and the model and software version of your smartphone.