| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a POS system for providing a membership service for charging for a plastic bag depending on a customer's accumulated points. <P>SOLUTION: In the settlement device (POS system), points corresponding to the price of the plastic bag required in purchase of commodities are subtracted from the accumulated points for each customer, and if the subtraction is impossible, this price is added to the purchase amount of the commodities. <P>COPYRIGHT: (C)2008,JPO&INPIT |
