Patent ID: 7133838

Claim:
A method of buying and selling personal information through a network, comprising: transmitting a personal information to be registered from a seller terminal through said network to an information manager terminal; accumulating the personal information thus transmitted into a data base of said information manager terminal; transmitting a personal information purchase request from a buyer terminal through said network to said information manager terminal, when said buyer terminal purchases the personal information from said information manager terminal; searching the data base to extract seller terminals which are connected with information corresponding to the personal information purchase request; transmitting the information on a buyer of said buyer terminal to the seller terminals thus extracted to check whether the personal information can be supplied or not; and searching the personal information of the seller terminals who agree to transmit the personal information to said buyer terminal through said network by said information manager terminal, wherein said information manager transmits settlement information on the personal information buying/selling through said network to a settlement terminal, receives an information supply charge from said personal information buyer on the basis of the settlement information at said settlement terminal and pays an information purchase charge to said personal information seller, wherein the information purchase charge is paid in accordance with a personal information level to be supplied.