the user can access the location/track screen, which displays the latitude and longitude of the device, and it will show a live location that will updated every 10 seconds via Google Map.
the user can navigate to the door control screen, which displays lock and unlock buttons. When the user taps the "Unlock" button, the app sends a signal to the vehicle's electronic control unit (ECU), which unlocks the doors. When the user taps the "Lock" button, the app sends a signal to the ECU, which locks the doors.
the user can navigate to the command control screen, which displays buttons stopping the engine. When the user taps the "Off Engine" button, the app sends a signal to the vehicle's ECU, which cut off the engine.
the user can navigate to the engine restore screen, which displays a "Restore Engine" button. When the user taps the "Restore Engine" button, the app sends a signal to the vehicle's ECU, which restores the engine to its default state.