| 摘要 |
A user can play a network game by using game client terminal (108) and can receive electronic chips according to the game score. The exchange rate from the score to the amount of electronic chips is dynamically determined by electronic chip issuance module (102) with cooperation by game server (109), referring to electronic chip condition calculation module (107). The user can purchase commodities by using Web-POS client terminal (110), and can receive discount as he or she wishes by using electronic chips which are issued to each of users. The exchange rate from electronic chips to the currency is dynamically determined by electronic chip consumption module (103) in cooperation with Web-POS server (111), referring to electronic chip condition calculation module (107). The ability to determine above-mentioned exchange rates generates various sales promotion effects. <IMAGE>
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