SECURITY SYSTEM, SECURITY METHOD, AND READER AND SERVER DEVICE, SUITABLE FOR USE IN SECURITY SYSTEM AND SECURITY METHOD

PROBLEM TO BE SOLVED: To provide a security system which can issue an electronic key flexibly in accordance with a request from a specified user who is permitted to open a lock of a door 1. SOLUTION: A reader 10 is equipped with: a display means 12 for displaying a reader ID; an authentication means 15 for authenticating the reader ID which is included in the electronic key read from a mobile terminal 30; and a request means for requesting the unlocking of the door 1 at success in authentication. The mobile terminal 30 is equipped with: a transmission means 33 for transmitting the reader ID and the mobile terminal ID, read from the reader 10, to a server device 50; and a display means 35 for displaying the electronic key which is transmitted from the server device 50. The server device 50 is equipped with an electronic key issuing means 54 for issuing the electronic key including the reader ID, in accordance with the reader ID and the mobile terminal ID, transmitted from the mobile terminal 30. COPYRIGHT: (C)2004,JPO