| 摘要 |
<p>A reward message (10) is produced which includes publicity to be viewed (11) and an associated credit message (12), made up of a credit value (13) and a first authentication certificate (14). The reward message is received at a multimedia terminal (1) and the credit value and certificate temporarily stored (21). A second certificate is produced based on the publicity information being viewed on the screen (4) and the user is credited with the designated amount when the two certificates are found to match in a validation process. Preferably the second authentication certificate is produced by transmitting an interactive test message (25) to the user, which may be in the form of a questionnaire relating to the publicity information viewed, the certificate being generated according to the answers given being sufficiently correct. The test message may be transmitted as part of the reward message. The credit value may be stored in an IC card (29), which may be a bank card or electronic wallet.</p> |
