A bullet loses six feet of height while flying across 1,000 yards, and a hunter firing such a shot must compensate by altering the weapon's aim. At that distance, fine adjustments would be difficult to estimate — but TrackingPoint has developed a Linux-powered hunting rifle that's capable of doing all of the calculations for the hunter. Ars Technica has an in-depth report on what it's like to look through the $17,500 rifle's scope when the target locks and the viewfinder tracks upward to locate the precise point where the weapon should be aimed. Building distance compensation into the hunter's view is only part of what the embedded ARM computer is capable of: it can also follow targets, determine the precise moment when to fire, and stream video from the viewfinder to a paired iPad app.