| 摘要 |
A security system using Internet according to the present invention can provide various door lock services, such as a user's information modification, a foreigner's identification, a door lock control, a lock state checking, a safeguard service, and a priority order service by making a successively mutual communication operation between main server and user's personal computer via Internet for the purpose of reciprocating a corresponding service page on various door lock services. For providing a foreigner's identification service, a peripheral external equipment is connected electrically to the personal computer and the main server. The peripheral external equipment includes an external door equipment for reciprocating a call service communication between a foreigner and user and a sensing device for sensing a change of user's door environment. A conversion device which can sense a fine change of a predetermined state into another state may be included in the sensing device. |
