| 摘要 |
PROBLEM TO BE SOLVED: To provide a distribution system for distributing the enciphered contents data of music or the like to the portable terminal of a user, who answers a quiz. SOLUTION: A distribution sever 30 distributes an advertisement picture from a sponsor to an accessed portable telephone set 100 together with the picture of a quiz with prize. The user of the portable telephone set 100 watches the quiz picture displayed after the advertisement picture and inputs the answer of the quiz. The portable telephone set 100 transmits the data of the answer to the distribution server. The distribution server 30 decides whether the answer is right or not and when the answer is right, the contents data and the deciphering key of cipher are distributed to the portable telephone set of the user. |
