I worked on research in electronically herding cows for a while: https://groups.csail.mit.edu/drl/animals_robots/cow_herding/cow_herding.html https://groups.cs

I worked on research in electronically herding cows for a while: https://groups.csail.mit.edu/drl/animals_robots/cow_herding/cow_herding.html https://groups.csail.mit.edu/drl/animals_robots/cow_herding/... The collar you see there had a Zaurus PDA which ran the herding algorithm and managed the ad-hoc peer-to-peer wireless network between the cows. Each collar also had a GPS unit and a tiny guitar amplifier/speaker was used to amplify the sounds (WAV files played by the Zaurus). We had only minor success in using sounds to herd them, mostly they would ignore the sounds after a while. CSIRO in Australia and a USDA researcher who patented the idea 20+ years ago extended the work further eventually using electric shocks from an ear tag to train the cattle to associate a sound with a shock, then later using just the sound to manage the cattle. They got very good results with this while minimizing the stress on the cattle due to shocks. So I'm somewhat dubious that this company has had much success with just a buzzing sound. Even shocks won't stop a cow if it is determined. They are herd animals however and feel uncomfortable if away from the herd, so if most of the herd obeys eventually the stragglers will come round. We stopped working on it when we started getting inquiries from companies wanting to use the technology on prisoners. Herding people electronically is just wrong. We also talked with an animal ethics researcher who was concerned that the cattle would not be visited by the ranchers as often and would suffer because of it. For example, sensors can tell you if a cow has a fever but not if it has a stone in its hoof. If you trust the sensors too much and don't visit the animals as much the animals can be harmed.