| 摘要 |
PROBLEM TO BE SOLVED: To perform a micropayment transaction of a small amount easily by one login. SOLUTION: An electronic token is issued by a micropayment service provider 60 and a user 50 purchases/rents merchandise provided by a vendor 55 with the token. When the user 50 accesses the site of the provider once, the user 50 can visit web pages of a plurality of the vendors 55 during a prescribed period. In order to prevent a non-permitted use of an account of the user, prevent non-permitted downloading of contents from the site of the vendor and prevent the non-permitted alteration of transaction data, a security means for the vendor and the user is provided. Payments between the service provider 60 and the vendor 55 are settled altogether at the time of reaching a limit value of a prescribed money amount or time. Thus, a transaction cost is reduced and a fee becomes relatively low even for the transaction of a small amount. |
