What is global positioning system (GPS)?

The Global Positioning System (GPS) is a satellite-based navigation system made up of a network of 24 solar-powered satellites placed into orbit by the U.S. Department of Defense. GPS was originally intended for military applications, but in the 1980s, the government made the system available for civilian use. GPS works in any weather conditions, anywhere in the world, 24 hours a day.

How GPS works

GPS satellites circle the earth twice a day in a very precise orbit and transmit signal information to earth. GPS receivers take this information and use triangulation to calculate the user's exact location. Essentially, the GPS receiver compares the time a signal was transmitted by a satellite with the time it was received. The time difference tells the GPS receiver how far away the satellite is. Now, with distance measurements from a few more satellites, the receiver can determine the user's exact position and display it on the unit's electronic map.

How a personal GPS tracker works

When GPS is used in conjunction with a personal tracking device, it provides location awareness in combination with alert technology. So if your child or elderly parent moves to a position outside of a prescribed safe area, you receive an alert. With two-way interactivity you can reach out to your family member and know they are safe. The devices also come with an emergency SOS button that can be pressed by the wearer to alert you to a problem. Knowing where your loved ones are and that they are where they are supposed to be gives you worry-free peace of mind.