GPS is the guide for us. Like any human guide, it guides us through the way. It tells us different directions. It tells us about the important places near us. Thus, it does the work of any human guide. Human guides have to travel every inch of ground to gain the familiarity of a place. 

But the GPS does no travel prior guiding. They don’t have to. They just ask from the terminal database about a place and you get the information in nanoseconds. Human guides are specific to one place but GPS systems know the places miles away form them. 

The pocket PC has software installed in it which connects you to the GPS. Using this Car Mount software you locate your position. By using this software you can also download the detailed map of the place you desire. Moreover theses maps can also be personalized using the GPS software. 

There is specialized GPS software available. For example, some software are used for surface features like natural features such as rivers, mountains, lakes and some constructed land features like roads, bridges etc. some GPS software is for aviation. You use it while flying and still some is for marine use to track the location in sea and ocean. 

Some very sophisticated pocket PC or handhelds like Go 910 have vocal systems. You do not have to see the LCD of your pocket pc time and again during driving. Turn on the speaker and listen to the guidance information you requested for. This security system has been very successful.