Abstract: There is provided a location information management system at a relatively low cost, whereby information including the location information of a vehicle can be managed without affecting the driving. In the location management system including abase transceiver station for transmitting a signal including base transceiver station identifying information, a ubiquitous module 201 for receiving the signal including the base transceiver station identifying information, and an FMS 105 for communicating with the ubiquitous module 201, the ubiquitous module 201 is provided with an analysis unit f306 or selecting at least one base transceiver station based upon a reception state of the signal including the base transceiver station identifying information, and a communication unit 305 for communicating the base transceiver station identifying information of the base transceiver station selected to the FMS 105.

Abstract: The traffic amount of the radio communication is reduced and the load applied to the management side of the system is reduced, thereby making the data shared with only prescribed users in an efficient manner. There is provided a shared data management apparatus, for managing sharing of data stored in a plurality of data storage units, is provided with: a profile group management unit 201 for managing attribution information of users; a group processing unit 202 for creating a user group based upon the attribute information; a sharing policy management unit 203 for managing an authority information permitting a user included in the user group to share the data stored in the data storage unit, so that the profile group management unit 201 identifies the user group permitted to share the data stored based upon the authority information.