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With the advance in driver-less technology, surely it is possible to identify possible stock problems when the horn is pushed. With the clever procedural logic, those suspect animals should be warned off with a targeted horn.
Many targeted horns have been proposed here (some not being suitable for animal use) so there is Halfbakery precedence. This implementation would still have to be a high energy speaker array or analogous technology, to deliver a directional moo-ving sound.
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