| 摘要 |
PROBLEM TO BE SOLVED: To provide a book sales service capable of purchasing a book instantly without much labor, and having no difficulty in acquiring a storing place of books. SOLUTION: A user accesses a home page of a book store by using a user terminal 1, and selects and orders a book desired to be purchased. When ordering, the user transmits personal information and the account number of a financial institution. The book store inquires the financial institution of balance information of the user's account. If the balance is over the book price, the book price is paid from the account, and an electronic file of the ordered book is transmitted to the user terminal 1. |
