Types of portable tracking devices based on GPS
The benefits of portable wireless locating services can be fully appreciated when you find yourself driving in an unfamiliar city and are at a complete loss about driving directions, roads, streets and lodging options. In such instances, a portable tracking device connected to a global positioning system (GPS) will enable you to practically locate anything in the city with the help of photographs, signals or data provided by the satellites orbiting around the earth.

As GPS tracking becomes more widespread, a wide array of portable tracking devices are now available in the market. Some of the commonly used gadgets that can be used for such tracking purposes are listed below.

Mobile phones
Your mobile phone can serve as an excellent tracking device if it has the required hardware installed in it. For instance, you may just have to enter the five-digit zip code and get the geographical information of the area as also information about restaurants, lodging, and so on. It is important to note that the accuracy of the information depends on the size of the cell phone and if the size is small, there may be chances of inaccuracies in the information. Yet, the inaccuracies do not make much of a difference in the sense that you may be off the location by just a few meters.

PALM PDAs
You can download data equivalent to a city guide on your Palm PDAs before starting out for a trip and then update the information once you reach your destination. Now, suppose you want to watch a movie. To find a suitable movie, enter the type (comedy, action, and thriller). You will get a complete listing of the movies, theatres, and show timings. Scroll through the list and make your choice. You can also get reviews of the movies that will enable you to make your choice.

Passive vehicle tracking device
This portable tracking device can be T vehicle. The device has a magnetic mount and is weather-proof. Since these units operate on batteries they can prove to be expensive. But you will be able to find models that automatically shut the device down if the vehicle is stationary for more than five minutes. Additional features of such devices include a flash memory that can retain data even when the battery has expired.

PocketPC handhelds
You can install portions of Microsoft's Streets and Trips and MapPoint desktop applications in these handhelds. Using this information, you can view maps and even search for streets and addresses.

Other portable units
Small, lightweight portable devices that can be worn or carried by individuals are available in the market. These devices are configured to customer specifications and can be put on high-value assets. Once these devices are switched on, they automatically begin reporting their positions, which can be read on web-based maps. These devices can also monitor high value assets traveling through courier.

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