Abstract: A location-relevant service system provides location-relevant information to, or performs location-relevant service for, a first mobile unit based on the location of a second mobile unit. In one instance, the first mobile unit is fixed on a vehicle, while the second mobile unit can be provided as a cellular phone. In another instance, the first mobile unit is provided with a display panel, so that authentication can be achieved through providing the display location information to a location-relevant service server using the second mobile unit.

Abstract: A system for remotely tracking a mobile unit is presented. The system includes a computer connected to a data network, mobile units collecting data and transmitting the data to the computer, and a configuration database connected to the data network. The configuration database stores configuration parameters for the mobile units. The mobile units are programmed to contact the configuration database upon being powered on, obtain the configuration parameters, and transmit the collected data to the computer according to the configuration parameters. Since each configuration file could apply to multiple mobile units, the system provides an efficient way to control the data reporting patterns of many mobile units. The configuration database may be organized in layers of configuration files for improved flexibility. Files from different layers can be mixed and matched and then applied to a group of mobile units.

Abstract: A location-relevant service system provides location-relevant information to, or performs location-relevant service for, a first mobile unit based on the location of a second mobile unit. In one instance, the first mobile unit is fixed on a vehicle, while the second mobile unit can be provided as a cellular phone. In another intance, the first mobile unit is provided with a display panel, so that authentication can be achieved through providing the displayed location information to a location-relevant service server using the second mobile unit.