Abstract: A system to link a mobile device with a vehicle on-board unit includes an interface section that allows communication between the mobile device and the on-board unit, a linkage determining section that, on the basis of information obtained by the interface section, determines whether or not the mobile device and the on-board unit are linked together, a vehicle travel determining section that determines whether or not the vehicle is in motion, an application start control section that starts a launcher application provided on the mobile device, the launcher application being configured to restrict use of a registered application of the mobile device while the vehicle is in motion, and an illumination control section that causes a screen of a display section of the mobile device turn off when the launcher application is started.

Abstract: A system that links a mobile device with a vehicle on-board unit includes a data control section that restricts use of at least one of a plurality of registered application software products provided on the mobile device, and a data output section that outputs an indication representing the at least one registered application software product to a display section of the vehicle on-board unit when the at least one application software product is available according to conditions of the vehicle.