The OnTrak GPS Guidance System is designed to guide one in following straight lines, radius, or contour routes with an accuracy of about 7 inches according to the manufacturer. The system consists of a battery-powered, wireless device having seven bright LED lights (affixed magnetically to the hood) that operates off and transmits data to an in-cab iOS or Android app. It requires no internet connection, and the manufacturer claims that it can be swapped between machines in seconds, operates up to 24 hours of continuous use, records field map data by date, location, and field name, and saves that data as a digital file. NOTE: this is not an auto-steer system; it simply provides GPS guidance to the operator steering the tractor or UTV.