| 摘要 |
So that a purchaser can book and purchase a commodity without having to bear anything extra other than what he or she usually bear, purchaser terminal unit 10 transmits to a credit card company terminal unit 40 commodity booking information and a credit card number designated by the purchaser, and the credit card company terminal unit 40 stores the booking information and the credit card number matched with each other. A retail store terminal unit 30 enters the credit card number from the credit card presented by the purchaser, transmits that credit card number to the credit card company terminal unit 40 to have the matching booking information returned, and cause the commodity matching that booking information to be sold to the purchaser.
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