| 摘要 |
PROBLEM TO BE SOLVED: To issue a master card and a slave card to enable addition of points to the master card when shopping with the slave card, whereas conventionally points could only be added to one card and if suddenly a family member was asked to purchase something points could not be added unless the family member carried along the one card.SOLUTION: Provided is a slave card point/master card collective administration system in which additional points are added to a master card when shopping with a slave card while the master card exists. |
