in the present embodiment an automatic ticket gate 300 is provided to the boarding station 11 and an automatic ticket gate 200 is provided to the destination station 13 a memory card 100 is a payment processing device which is a contactless memory card with a prepaid card and commuter pass functionalities and which is issued by the railway company the user 10 obtains the memory card 100 from the railway company in an exchange for a predetermined amount of payment the user 10 carries the memory card 100 when taking the train 12 when the user 10 attempts to go through the automatic ticket gate 300 and enter the boarding station 11 in order to take the train 12 the user 10 holds the memory card 100 toward the automatic ticket gate 300 information is transmitted wirelessly between the memory card 100 and the automatic ticket gate 300 and the flap door of the automatic ticket gate 300 opens if the automatic ticket gate 300 judges that the user 10 is allowed to enter based on the transmitted information the user 10 enters the boarding station 11 after the flap door is open the user 10 then takes the.