Joy and Mike Wilson's cows wear special collars that track their location and allow the Wilson's to keep them penned by "virtual fences" through sound alerts and low-voltage shocks, removing the need ...
A new collar for another type of farming. In the south of England, a herd of about 10 Sussex cows is trialling a collar that contains a GPS chip. But the point isn’t to track where the cows are — the ...
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