Some GPS Mini Tracker have a simulator or demonstration mode

When it comes to weighing the pros and cons of PDA navigation systems, you really have to examine your needs and planned use. If you plan on using a Personal GPS Tracker exclusively for road navigation, you should definitely consider a PDA. However if you’re going to be using GPS primarily in an outdoor setting, ...

Personal Tracking Device provide your location and other useful information

Although survey-grade GPS receivers can provide accuracy of less than two centimeters, they are very specialized and expensive, require a lot of training, and aren’t very portable. Their accuracy is achieved with DGPS and postprocessing collected data to reduce location errors. The average GPS user doesn’t need this level of precision. Clouds, rain, snow, and ...