The Halo Collar 5 and SpotOn Nova have several similarities, but also some key differences. Both systems create virtual fences without having to put cables beneath the ground or erect actual fences. Furthermore, both use smartphone applications for boundary management and dog location tracking. However, the two products differ in their method of GPS positioning and frequency of updates of the dog's whereabouts. The Halo Collar 5 comes with Precision+ technology that was devel