March 04, 2009 :: Posted by - Laura :: Category -
Accessories
GPS Tracking units are commonly found on/in a vehicle, person or asset of some substantial value. It is attached in an attempt to track the positioning of these at regular intervals…
‘GPS’ stands for ‘Global Positioning System’, the recorded location is stored in the tracking system, or alternatively transmitted to a central data base, or computer connected to the Internet, using Radio, Cellular GPRS, or Satellites – a modem embedded into the unit itself…
Using customised software, the location of the particular can be seen on a map backdrop, however, although this seems to be a global breakthrough, amateur radio operators have been using GPS-based nationwide real-time (APRS) since 1982. APRS is Automatic Packet Reporting System…
Usually GPS tracking systems tend to fall into one of the following categories;-
- Data Loggers
- Data Pushers
- Data Pullers
Data Loggers – have an internal memory that logs its position at regular intervals. This is usually in the form of a memory card, internal flash or USB port, some act as a USB Flash Drive which allows the data to be downloaded for further analysis in any computer.
An example of this may be – A Sports enthusiast, who mainly use these device types as they are most suited to for activities such as outdoor sports like backpacking or jogging… On their return, the information logged is transferred onto a PC to calculate length and duration of the journey…
Data Pushers – Push Technology, Security industries, as a common example, push information (sends) its position at regular intervals to a particular server instantly analysing the data.
Many companies actually provide “push” technology data, enabling complex GPS tracking in business’s that specifically employ a mobile workforce.
Some examples of usage are as follows…
- Vehicle Fleet Control – Companies will put trackers on vehicles to establish their position along a route/journey i.e – Taxi’s or Delivery Vehicles, and Armoured Trucks.
- Stolen Vehicles – Owners of high valued cars will fit tracking devices to be activated in the event of a robbery, so that they can locate the vehicle quickly and efficiently.
- In some cases, trackers can also be put on wildlife maybe in the form of a chip in the collar. This allows scientist to study animal activity in the wild.
- Control in racing events – Some sports can benefit from using trackers where the judges can identify participants taking short cuts or cheating, or to monitor how far apart from eachother the contestants are. Gliding is a good example of this…
- Internet Fun – Some surfers have created their own web pages with personal trackers, in which others can monitor their whereabouts.
Data Pullers – are devices which are always on, continuously queried as required – It is Pull Technology.
A computer with Internet connection and also connected to GPSD is an example of this kind of device. It is not as yet widespread technology but are becoming more and more common amongst devices containing a GPS receiver with a cell phone that when sent a unique SMS message, replies with a message with details of its location.
Potentially, these tracing devices can be abused, and raise alot of concerns about peoples personal privacy, as over time, a typical pattern of movements can be revealed. In the US, the use of GPS trackers with police can require search warrants in some cases……!
