GPS trackers are highly accurate and can provide real-time location information with an accuracy of a few meters. The accuracy of GPS trackers depends on various factors such as the number of satellites in view, the quality of the GPS receiver, and the environment in which the GPS tracker is used. Generally, GPS trackers used in open environments with a clear view of the sky have better accuracy than those used indoors or in urban areas with tall buildings that can block the GPS signals. However, advancements in technology have made GPS trackers more accurate even in difficult environments, such as the use of Assisted GPS (A-GPS) or multi-constellation receivers that can access signals from multiple satellite systems like GPS, GLONASS, and Galileo.
It is important to note that GPS accuracy can vary depending on the purpose of use. For example, for commercial applications like fleet management, an accuracy of a few meters is sufficient, but for military and aviation applications, the accuracy requirements can be as high as a few centimeters.