A method includes receiving, by sensors inside an enclosure of a vehicle, signals generated by signal generators in the enclosure of the vehicle. One of the sensors or signal generators may be part of a mobile device inside the enclosure. The method also includes determining a location and orientation of the mobile device from the signals. The method further includes determining, based on the location and orientation of the mobile device, an object in the enclosure that the mobile device is pointing to. The mobile device further includes transmitting a message to the mobile device in response to determining that the mobile device is pointing to the object, so as to cause the mobile device to display a user interface to allow the mobile device to control the object.