http://www.dynatrackgps.com/ tracking devices gps tracking devices. Our systems can be installed covertly hidden so that your employees (or teens) have no idea they’re even there – or where to look to disable them. No matter how large or small your fleet, our systems handle accounts for as little as 1 vehicle or as many as 15,000. Ambulance services, Law Enforcement and private security agencies all over the nation rely on the X-5 technology in our systems to keep track of their own vehicles.