| 摘要 |
PROBLEM TO BE SOLVED: To efficiently perform shopping. SOLUTION: When a communication route is established with a portable telephone set 20 through a radio antenna 11 installed in the entrance of a store side, for example, reference information on a menu which can be used at the time of shopping is supplied to the portable telephone set 20. When the communication route is established with the portable telephone set 20 through a radio antenna 12 arranged in the position of a register 15, identification information is supplied to the store side from the portable telephone set 20. When the adjustment of shopping is terminated, a point result at every identification information is calculated from identification information and an adjusted amount. Information which can be used at the time of subsequent shopping, discount information of a grouping store and the calculated point result, for example, are supplied to the portable telephone set 20 as privilege information. A commodity to be purchased can easily be decided by using reference information. Then, the schedule of subsequent shopping can easily be made by using privilege information. |
