Abstract: A system, etc. capable of facilitating communication about a travel in which a plurality of members participate are provided. Based on communication with a first client (2a), a server (1) recognizes a plan which is determined by a departure place, a stopover, a destination, and a route and is about a first group to which a first user belongs. Based on communication with a second client (2b) of a second user belonging to the first group as a belonging-target group registered in a database (14), the second client (2b) is caused to display icons representing the departure place, the stopover, and the destination and the route included in the plan.

Abstract: To provide a server, a client, and a system capable of easily sharing conditions of members or mobile bodies which may affect a plan of the group. A server control device 31 communicates with a first client 10 via a server communication device 35 to recognize information concerning a first user or concerning a first mobile body 1. The server control device 31, in a case where the information is information indicating that a condition of the first user or first mobile body 1 is under a specific condition (FIG. 4/STEP 320—YES or FIG. 4/STEP 330—YES), transmits a notification that the condition of the first user or first mobile body 1 is under the specific condition to the second client 20 via the server communication device 35 (FIG. 4/STEP 324 or FIG. 3/STEP 332).

Abstract: A system, etc. that can facilitate sharing of information when a predetermined condition is satisfied is provided. A client (2) includes: an input device (21) that detects an input mode of an own user; a communication device (23) that carries out communication; and a client control device (20) that determines whether or not a first condition set in advance is satisfied and, if the first condition is determined to be satisfied, causes the input device (21) to function as an input interface for sending predetermined first information, which is associated with a predetermined input mode, via the communication device (23) by the predetermined input mode having a smaller number of times of input or a smaller information quantity to be input with respect to the input device (21) than a case in which the first condition is determined to be not satisfied.

Abstract: Provided is a system or the like capable of allowing a navigation-client to efficiently use a route search result by a navigation server, while accepting the existence of difference between map data used by each of the navigation server and the navigation-client. By having a common description such as coordinate values, it is able to make the navigation-client 200 efficiently use the route search result by the navigation server 100, while accepting the existence of difference of map data used by each of the navigation server 100 and the navigation-client 200.

Abstract: To provide a server, a client, and a system capable of easily sharing conditions of members or mobile bodies which may affect a plan of the group. A server control device 31 communicates with a first client 10 via a server communication device 35 to recognize information concerning a first user or concerning a first mobile body 1. The server control device 31, in a case where the information is information indicating that a condition of the first user or first mobile body 1 is under a specific condition (FIG. 4/STEP 320—YES or FIG. 4/STEP 330—YES), transmits a notification that the condition of the first user or first mobile body 1 is under the specific condition to the second client 20 via the server communication device 35 (FIG. 4/STEP 324 or FIG. 3/STEP 332).

Abstract: A system, etc. that can facilitate sharing of information when a predetermined condition is satisfied is provided. A client (2) includes: an input device (21) that detects an input mode of an own user; a communication device (23) that carries out communication; and a client control device (20) that determines whether or not a first condition set in advance is satisfied and, if the first condition is determined to be satisfied, causes the input device (21) to function as an input interface for sending predetermined first information, which is associated with a predetermined input mode, via the communication device (23) by the predetermined input mode having a smaller number of times of input or a smaller information quantity to be input with respect to the input device (21) than a case in which the first condition is determined to be not satisfied.

Abstract: A system, etc. capable of facilitating communication about a travel in which a plurality of members participate are provided. Based on communication with a first client (2a), a server (1) recognizes a plan which is determined by a departure place, a stopover, a destination, and a route and is about a first group to which a first user belongs. Based on communication with a second client (2b) of a second user belonging to the first group as a belonging-target group registered in a database (14), the second client (2b) is caused to display icons representing the departure place, the stopover, and the destination and the route included in the plan.

Abstract: Provided is a system or the like capable of allowing a navigation-client to efficiently use a route search result by a navigation server, while accepting the existence of difference between map data used by each of the navigation server and the navigation-client. By having a common description such as coordinate values, it is able to make the navigation-client 200 efficiently use the route search result by the navigation server 100, while accepting the existence of difference of map data used by each of the navigation server 100 and the navigation-client 200.