STATION SERVICE SYSTEM, TICKET ISSUING MACHINE, FARE ADJUSTING MACHINE, HIGH ORDER SERVER, AND AUTOMATIC TICKET GATE MACHINE

PROBLEM TO BE SOLVED: To provide a station service system which is highly convenient for a user by storing only identification information in a medium, and for managing information necessary for entry processing and exit processing in association with the identification information in a high order server.SOLUTION: Only identification information is stored in a medium P, and when the medium is issued, the identification information of the medium is managed by a high order server 1 so as to be associated with boarding information necessary for performing entry processing or exit processing. Then, the identification information stored in the medium P presented by a user when the user passes an automatic ticket gate machine 200 is read, and an inquiry is made to the high order server 1, so that entry processing or exit processing can be performed without performing the writing processing of the information to the medium P. Thus, the occurrence of any processing error can be prevented in write-in processing to the medium P.