| 摘要 |
In an authentication section 22 of a license server 4 , a user using a user terminal 1 is authenticated by using a user ID and a password provided by a user terminal 1 <SUB>1 </SUB>for the purpose of user identification. Then, the user terminal 1 is to be authenticated by using an equipment ID issued by the authentication section 22 for the user ID to specify the user terminal 1 . In response when the user ID is authenticated, a content system is allowed for viewing contents in a content server 3 , for example. The present invention can be applied to any content system which provides contents to the user terminal. With such a configuration, any unauthorized accesses can be prevented from a plurality of equipment units.
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