| 摘要 |
PROBLEM TO BE SOLVED: To provide a security system whose alarm can quickly be stopped by a user when the user forgets a personal identification number for an alarming device not configured communicable with a security center.SOLUTION: A security system includes an alarming device 3 and a security support center. The alarming device 3 receives a personal identification number key issuing operation i, creates and outputs a key k to the outside upon the reception of the personal identification number key issuing operation i, creates a personal identification number X from the entered key k with a specific algorithm, and stops an alarm upon an input of the personal identification number X. The security support center creates the personal identification number x from the key k with the specific algorithm same as that of personal identification number creation means on the alarming device, and creates and outputs the specific personal identification number X to the entered key k with personal identification number creation means on the security support center. |
