A GPS tracker is a device that uses the Global Positioning System to determine and track the location of an object or person in real-time. It receives signals from satellites to pinpoint its location, which can then be transmitted to a computer or smartphone for monitoring. These trackers are commonly used for vehicles, pets, and personal safety. GPS trackers come in various forms, including handheld devices, smartphone apps, and embedded systems in cars. They are useful for navigation, fleet management, and ensuring the safety of loved ones. Many trackers also offer additional features like speed monitoring and geofencing alerts.