The present invention refers to includes sale or shopping center registers the entering device and estate of sale information containing, electronic, for retrieving information to a article on sale registration displayed on the map a manner is to whether in, terminal designated position determined according to the of commercial area search range, which in the presence of a subject suffering from extending on the commercial area by downloads the security program search, effectively sale information containing in commercial area is exposed to an trading is configured to activate, realty with latitude and the longitude of the place database number of a semiconductor substrate to define an active better even available to the sale information containing under public affairs number effectively with an opportunity to a realty associated commercial area by using geographic information relates to information service system.