| 摘要 |
PROBLEM TO BE SOLVED: To provide a navigation server and navigation client that secure an information protection transmitted from a navigation client to a navigation server and unique to each user without deteriorating convenience.SOLUTION: A navigation server 100 is adapted to inhibit access to a navigation server 100 of a navigation client 200 when the navigation client 200 satisfies a second condition determined based on a content of past communication with the navigation client 200. The navigation server 100 is adapted to cause the navigation client 200 to output a message for prompting a new input of an authenticator on the basis of communication with the navigation client 200 having the access to the navigation server 100 inhibited by a server authentification computation processing element 110. |
