Mobile phone key for operating e.g. door lock of car, has global system for mobile communication/universal mobile telecommunications system module giving electric pulse, where battery is provided to supply power to module and receiver
摘要
<p>The key has a processor with a global system for mobile communication (GSM)/ universal mobile telecommunications system (UMTS)module. Poles of a switch are connected to the module, where the module gives electric pulse for locking or unlocking a door lock. A rechargeable battery is provided to supply power to the module and a radio receiver. A mobile phone communicates with a head office for locking and unlocking the door lock via a short message service (SMS).</p>
