For the first solution, user will think if there's more function like: I want to see my car on the map. I f there's several cars, what shall I do? Can I store all the coordinates for a trace?

The solution II & III has more exciting functions let user to make it. User need connect a GSM modem with computer, and then install the software to PC. The software runs into mode: GSM or GPRS. If there's no internet connection, you could use GSM mode; If yes, user could track real-time and see his car on the map.

The difference between solution II & III is the working mode:

Solution II: SMS, This solution can show the location on the map. It could work without internet connection. And user could control the cost for tracking which only come from SMS charge. But the speed to send SMS is slow. It's can not track real time and has no functions as GPRS.

Solution II: SMS, GGMapTrack_SA MxMapTrack_SA

This solution can show the location on the map. It could work without internet connection. And user could control the cost for tracking which Only come from SMS charge. But the speed to send SMS is slow. It's can not track real time and has no functions as GPRS.

GGMapTrack_SA is based on the Google Earth, the software embedded in Google Earth, through the serial port with the ETM (SMS MODEM) Connected. It can remote management and control of vehicles through GSM network, and real-time display current location of vehicles on Google Earth. (SMS)

MxMapTrack_SA is Support MapInfo Map, and through the serial port with the ETM (SMS MODEM) connected. It can remote management And control of vehicles through GSM network, It used MapInfo Map and real-time display current location of vehicles on Map. And can get the detail address of vehicle. (SMS)

Solution III: GPRS & SMS.
This solution can show user's car real time on the map. And it use GPRS to transfer information, it has more powerful function as the mileage, history trace and so on.

Solution III: GPRS & SMS . GGMapTrack_SB MxMapTrack_SB
This solution can show user's car real time on the map. And it use GPRS to transfer information, it has more powerful function as the mileage, History trace and so on.

GGMapTrack_SB is based on the Google Earth, the software embedded in Google Earth, with this software, you no longer need to set up the Server. Without fixed IP. Through TCP / IP with the device that installed in vehicles for communication, it can remote management and control Of vehicles, and real-time display current location of vehicles on Google Earth. (GPRS, SMS)

MxMapTrack_SB is support MapInfo Map. With this software, you no longer need to set up the server. Without fixed IP. Through TCP / IP with The device that installed in vehicles for communication, it can remote management and control of vehicles, It used MapInfo Map and real-time display current location of vehicles on Map. And can get the detail address of vehicle. (GPRS, SMS) Both of them have the vehicles information management function. Because it is designed for one computer, so the suggestion MAX 50 vehicles.