How Does a Digital Car Key Work? Simple Explanation (2026)
Direct answer: A digital car key works by turning your smartphone into an encrypted credential that the car recognizes. When you approach the vehicle, your phone sends a secure signal over Bluetooth, NFC, or ultra-wideband. The car's receiver verifies the encrypted code and unlocks the doors or enables the engine. Factory systems build this into new models. Aftermarket devices like MoboKey add the same capability to almost any existing car, using Bluetooth with a 100 to 350 foot range and no internet required. Your phone already replaced your wallet, your ........