Vorrichtung, Verfahren und Programm zur Diebstahlsicherung

摘要

A vehicle (2) is equipped with an electronic device (16,17) having a micro-computer (31) which controls the operations of a playback unit for playing back sound data, and so on. A wireless unit (33) is connected to the micro-computer (31). When an authentication code from an authentication transceiver (14) is not received by the wireless unit (33) in the condition that the electronic device (16,17) is made operative by electric power supplied from the vehicle (2), or does not coincide with owner's specific authentication data stored in the electronic device (16,17) information indicating occurrence of an abnormality is output.