Destination positional information regarding a position of a destination with respect to a moving device and topographical characteristics information regarding characteristics of topography in the surroundings of the moving device are acquired. Weight inf...

A first transceiver can position itself by forming an ad hoc network of transceivers which assist the first transceiver in acquiring its position. A dedicated infrastructure such as GPS satellites is not required. The first transceiver, once it has acquire...

There are provided a positioning section (101) for locating a current position, a travel history database (108) for storing a history of a current position located by the positioning section and a history of a travel to an institution or the like actually ...