A GPS rangefinder is a device that uses Global Positioning System (GPS) technology to measure distances between two points. It calculates the distance by determining the coordinates of the user's location and the target location, providing accurate measurements for various applications, such as surveying, hunting, and golfing. These devices are often portable and user-friendly, making them accessible for both professionals and recreational users. Many GPS rangefinders also include additional features like mapping, waypoint tracking, and elevation data, enhancing their functionality for outdoor activities and navigation tasks.