The key card is used to 'authenticate' phone keys to work with Model 3 and to add or remove other keys.
Key card - Tesla provides a key card that communicates with Model 3 using short range radio-frequency identification (RFID) signals.A phone key supports automatic locking and unlocking. Phone key - You can set up your personal phone as a 'phone key' that communicates with Model 3 using Bluetooth.Model 3 supports the following types of keys:
