An information input/output method for transmitting/receiving information through a communication network between at least one user terminal, at least one service station for providing various services, and at least one service center for respectively managing said service station, comprising the steps of:
- requesting a service from said user terminal to said service center;
- selecting candidates for said service station capable of providing a service in accordance with the content of a request from said user terminal;
- transmitting the selected candidates for said service station from said service center to said user terminal;
- selecting any from said candidates for said service station transmitted from said service center;
- transmitting a type of said selected service station to said service center;
- transmitting information concerning a position of said service station selected by said user terminal from said service center to said user terminal;
- and
- displaying or outputting, to said user terminal, said information concerning a position of said service station transmitted from said service center.