| 摘要 |
PROBLEM TO BE SOLVED: To provide a method used in a system allowing exchange of transaction data between a user apparatus 1 and another concerned party 12. SOLUTION: One data entity relevant to a transaction is generated. Information of an object relevant to the transaction is inserted inside the data entity. The data entity is sent to the user apparatus 1 through a wireless interface 11. Then the user apparatus can request additional information relevant to the transaction on the basis of the information of the object. |
