Perimeter Technologies Dog Fence have the distinction of advanced technological features with their dog fence systems. One feature is the Perimeter Technologies Dog Fence comfort contact systems. They provide your pet with rubber contact pionts on the collar that provides your pet another safety feature not to mention comfort. One of the most well known technical advancement with a Perimeter Technogies Dog Fence is the WiFi Wireless system. Perimeter Technogies can proudly say they are the first to develop this type of dog fence system.