| 摘要 |
PROBLEM TO BE SOLVED: To determine the price corresponding to the value of information when dealing the information on a network and to secure the quality of the offered information. SOLUTION: Information seller terminals, information buyer terminals, and an information offering device deal information via the information offering device on a system connected to the network by this information dealing method. A plurality of information registered by information sellers is retrieved with the desired attribute inputted by a purchase applicant, and the summary of the retrieved information is transmitted to the information buyer terminal. When the information corresponding to the summary is purchased, the price of the information is raised, or when the information corresponding to the summary is not purchased, the price of the information is lowered. The information seller uses an assumed name, the one-to-one correspondence between the assumed name and the information seller is authenticated, then the summary and the assumed name are reported to the information buyer terminal. |
