| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a control method of a reproducing device capable of improving security against information leakage. <P>SOLUTION: In an optical disk 100, action identification information is recorded. The action identification information makes a reproducing device 1, to which the optical disk 100 is inserted, recognize that the medium is intended for a commercial deal via a network, and serves as a trigger that makes the reproducing device 1 execute the commercial deal. <P>COPYRIGHT: (C)2013,JPO&INPIT |
