This device enables them to 'whisper wireless commands to cows to control their movements across a landscape -- and even remotely gather them into a corral.' In fact, it could help farmers to maintain cows behind virtual fences. According to the researchers, 'the circuit board contains a processor, data storage, WiFi for remote communication, audio and electrical stimulation electronics, a GPS receiver, and sensors such as magnetometers and accelerometers that record the body orientation and configuration of the animal.' While the first virtual fencing system was patented in 1973 (for domestic dogs!), commercial virtual livestock control systems still do not exist today:
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