A user 100 makes an inquiry through a billing institution 103 to a gene analyzing institution 104 retaining gene analysis information, and the billing institution 103 transfers the gene analysis information received from the gene analyzing institution 104 to the user 100 using a routing address that was dynamically set. The gene analysis information is encrypted at the gene analyzing institution 104 in such a way that decryption at the billing institution 103 is infeasible. Since the gene analyzing institution 104 cannot identify the user 100, and the billing institution 103 cannot know the content of the gene analysis information, privacy of the user 100 can thus be protected.