PURPOSE: To prevent data from getting entangled by dividing the storage part of a non-contact card into plural recording areas, storing a data for judging the possibility of getting on a train for each electric railroad company and transmitting the data in the storage area corresponding to an electric railroad company identification data transmitted from a ticket examination machine.

CONSTITUTION: An EEPROM 15 stores the data for judging the possibility of getting on the train. This EEPROM 15 is divided into plural memory areas MA1-MAn, and the data for judging the possibility of getting on the trains for the respective electric railroad companies are written in the respective memory areas. The leading data in each memory area is defined as an ID code for each company which is the electric railroad company identification data. A transmission/reception control circuit 16 exchanges the data with the ticket examination machine through an antenna 2. A power supply circuit 17 for electromagnetic force extracts power caused by electromagnetic force from this transmission/reception control circuit 16 and supplies the power to a CPU 11 or the like.