| 摘要 |
PROBLEM TO BE SOLVED: To rapidly perform login to each display terminal when a user possessing a portable terminal moves between the plurality of display terminals. SOLUTION: When the display terminal 2 receives a login request from the portable terminal 1, the display terminal 2 requests user authentication to an authentication server 4. When the user authentication is concluded, the authentication server 4 generates an SID and transmits it to the display terminal 2. When the display terminal receives the SID from the authentication server 4, the display terminal permits the login of the portable terminal 1 to its own display terminal 2, and shares the SID with the display terminals 2 of the same group. When receiving a re-login request from the portable terminal 1, the display terminal decides whether or not the SID included in the request is shared with the display terminals 2 of the same group to determine rejection of the login without accessing the authentication server 4. COPYRIGHT: (C)2005,JPO&NCIPI |
