| 摘要 |
<p>PROBLEM TO BE SOLVED: To enhance users' convenience by enabling plural kinds of prepayment information used in a variety of wireless systems to be stored in one memory card. SOLUTION: The prepayment information each of which is usable for every wireless system of railroad companys and toll roads are stored on a memory card C, and when the pieces of prepayment information are used, any of the wireless systems is specified and the process of paying charges is carried out according to the piece of prepayment information for the wireless system specified.</p> |
