| 摘要 |
PROBLEM TO BE SOLVED: To provide data storage devices and systems for downloading and paying for content such as audio and video data, text, software or games on the Internet, which reduce the risk from unauthorized access.SOLUTION: A portable data storage medium has an interface for sending and receiving data, non-volatile data memory for storing received data, and non-volatile validation memory for providing payment validation data to an external device. In addition, a record of access made to stored content and use rules for controlling access to the content are stored. Further, access control data and supplementary data such as hot links to web sites and/or advertising data are stored. |
