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The Beauty of the GPS Tracker It can track vehicle location, real-time movement and driver performance, dramatically increasing efficiency.

By Jason Fogelson

Opinions expressed by Entrepreneur contributors are their own.

Large-fleet operators have been using GPS tracking devices to get real-time location information on their vehicles for years, and now the technology is trickling down to small-business applications and consumers. A cellular connection and smartphone interact with existing equipment on your personal vehicle to turn it into a company car in a snap.

The simplest units plug into the OBD-II (on-board diagnostics) port, which has been mandatory on every passenger vehicle sold in the U.S. since 1996. The port is easily accessed on most vehicles (usually under the driver's dash), and is used by mechanics to read trouble codes sent by the electronic control unit--the brains of the car. Once plugged in, the GPS tracking unit draws power from the car's electrical system and sends its information via existing cell phone networks to the home company's servers. The information is then routed to the users via the web or through an app on a mobile device.

Like many of the robust, customized telematics systems employed by the likes of UPS, this software tracks vehicle location, real-time movement and driver performance and sends out mechanical and service alerts.