| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a portable storage device for accessing a content file when a user is authenticated as a legitimate user. <P>SOLUTION: The portable storage device 100 includes: a user registering part 112 for registering a unique identifier of a telephone of a user who is allowed to use a content file, as a user identifier; an access request receiving part 120 for receiving an access request from an external computer 200 to the content file; a unique identifier extracting part 150 for extracting the unique identifier of the telephone 300 from a connection request received from the telephone 300 through a telephone network 400; and an access control part 130 for allowing the external computer 200 to access the content file in accordance with the access request when collating the user identifier registered in the user registering part 112 with the unique identifier extracted by the unique identifier extracting part 150 to determine coincidence. <P>COPYRIGHT: (C)2011,JPO&INPIT |
