| 摘要 |
PROBLEM TO BE SOLVED: To inhibit a door of a vehicle from being unlocked by an unauthorized act.SOLUTION: Each time identification information required for unlocking a door of a vehicle is received, a security system determines whether a deviation width of FSK (Frequency Shift Keying) signals indicating the identification information corresponds to a preset deviation width (step S303). Only when the determination is positive, the system outputs an unlock instruction to a door lock device. Thereby, the system can precisely inhibit the door from being unlocked by an unauthorized act, and can prevent a criminal act. |
