Patent ID: 8176550

Claim:
A security system, comprising: an entry authentication section, which is set at an entrance of a room, for authenticating entry into the room is communicably connected with an authentication-capable apparatus, which is an image processing apparatus, installed in the room via a network, wherein the entry authentication section verifies a user's authentication code inputted by a user for entrance authentication against a user's authentication code information registered in advance, and when the user's authentication code matches the information registered in advance, allows the user to enter the room by automatically opening a door or releasing a door lock, and entrance permission information of the user is transmitted to the authentication-capable apparatus, and when the user's authentication code does not match the user's authentication code information registered in advance, the user is inhibited from entering the room, and wherein the authentication-capable apparatus comprises: an authentication section which verifies the user's authentication code inputted by the user against the user's authentication code information registered in advance; and a use restriction section which sets a time needed for the user, who has been authenticated for entry by the entry authentication section, to move to the authentication-capable apparatus as a predetermined time period, receives the entrance permission information from the entry authentication section, and inhibits login to the authentication-capable apparatus and restricts use of the authentication-capable apparatus during the predetermined time period, even if the user's authentication code matches the user's authentication code information registered in advance, wherein when authentication by the same user is confirmed within the predetermined time period, the authentication-capable apparatus notifies the user's authentication code to a specific other apparatus.