| 摘要 |
PURPOSE:To provide possibility of using prepaid card and its management in a POS system by exchanging data necessary for dealing with the POS device using a prepaid card, and by furnishing a means to handle lacking charge when the remaining amount on the prepaid card is insufficient. CONSTITUTION:A car washing machine A is equipped with a car wash control means A2, which is to implement items selected through a No.1 key entry means A1, and a central processing means A6. This central processing means A6 transmits the card data read by the reader/writer A3 of a prepaid card to a POS device B and implements car wash according to a receipt admission signal given by the device B. The working items are transmitted to the POS device B, and the reader/writer A3 writes into the prepaid card on the basis of the account settling data returned therefrom. If the remaining amount in the card data is insufficient for the placed charge, a processing input at No.2 input means A4 is received, and lacking charge is processed through the POS device B. |
