| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To solve the following problems: it takes time and effort to register and set a password in association with user information; and it is troublesome for a user to be careful about management of personal information such as user name or password. <P>SOLUTION: The content use system is provided with a function for using the bunch of reproduction keys owned by a user as information for user authentication, and for authenticating a user as a userαin case of the bunch of the reproduction keys of content A, B, C and D, and for authenticating the user as a userβin case of the bunch of the reproduction keys of content A, C and E. <P>COPYRIGHT: (C)2011,JPO&INPIT</p> |
