Virtual Fences To Herd Wi-Fi Cattle

Virtual, moving fences controlled from a laptop could one day herd cattle to fresh fields for grazing. A farmer would control multiple herds from a single server at home as if they were playing a video game. Although static virtual fences already keep dogs inside yards in affluent US neighbourhoods, no-one has attempted a moving virtual fence before, nor attempted to apply the idea to large herds of animals. Basically we download the fences to the cows, says Zack Butler, of Dartmouth College in Hanover, New Hampshire. We say: ‘Today stay here, tomorrow go somewhere else