[Source] A macrolaser tracker was a device within an airspeeder which could be used to estimate the potential destinations of another moving vehicle. The tracker had to be aimed at the other vehicle, following which the airspeeders computer would take several seconds to process before providing its destination coordinates. The Jedi Knight Obi-Wan Kenobi used a macrolaser tracker to check if a Multi-Troop Transport was following his airspeeder on the planet Radnor, changing his own coordinates to see if the transports would change, which they did.