AUTOMATIC TICKET GATE

PROBLEM TO BE SOLVED: To allow exiting even when shortage occurs in SF data. SOLUTION: This automatic ticket gate processes the exiting based on the SF data recorded in an information recording medium. The ticket gate comprises a reduction processing means for reducing a riding fare from the SF data, and a controlling means for allowing the exiting until fare shortage of the SF data after the reduction process reaches a predetermined value or the time of fare shortages after the reduction process reaches a predetermined time, or for prohibiting the exiting when the fare shortage of the SF data after the reduction process exceeds the predetermined value or the time of fare shortages after the reduction process exceeds the predetermined time.