"GPS-equipped free-range cows that can be nudged back within virtual
bounds by ear-mounted stimulus-delivery devices"<p>The developer is working in the northern Chihuahuan desert, where
the bearing capacity of livestock rangeland can be expressed in
acres per animal (or cow/calf unit), and where a transition
from fixed fences to virtual could be a huge revolution for
ranchers, landowners, and public lands agencies alike.<p>I'd also be interested to see this sort of tech applied to a more
suburban context: a cluster of homeowners at a woodland interface
could keep a small herd of GPS-equipped goats to suppress brush and
unwanted grasses, reducing wildfire risks and competing with
browsing deer, while being less likely to leap out in front of motor
vehicles (assuming either good virtual boundaries or traditional
fences for the goats between browse and roads).