| 摘要 |
PROBLEM TO BE SOLVED: To prevent fraudulence as much as possible aimed at disabled communication between an acquired value discrete management means and an acquired value management server. SOLUTION: A card which enables the specifying of data of balls acquired by a player is issued from a card unit while the data of acquired balls issued are centralized and managed by the acquired ball management server and when the card enabling the specification of the data of acquired balls is issued from the card unit in offline, a card having offline issuance data recorded is discharged. In the exchange for prizes using the data of acquired balls issued, if no offline issuance data are recorded in the card received, at a POS terminal, an inquiry is made to the acquired ball management server to send back the result of the authentication and a processing is carried out following the result of the authentication. When the offline issuance data are recorded, exchange for prizes is conducted after standby for the allowance operation by an operator. COPYRIGHT: (C)2009,JPO&INPIT
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