History
The first commercial invisible fencing system was designed to contain house pets within a predetermined area, which was patented by Richard Peck, owner of Invisible Fence Company in 1974. Peck’s invisible fence was also the first borderless containment system used to contain livestock. In 1987 Peck successfully contained domestic goats to a limited area using RF receiving collars intended for household dogs. In 1989 Thomas M. Quigley of Tri-Tronics successfully trained cattle to avoid specific areas, with less than two days of training using dog training collars. In 1990 Tri-Tronics successfully developed a RF receiver specifically designed for livestock to control heifers in Canadian fields and pens. In 1991 Brian Rose invented a RF receiver that controlled cattle with an electric shock that was delivered through a nose clip. In 1992 AgriTech Electronics developed an electronic ear tag which used audio and shock cues to control cattle and was researched to be 90% effective in preventing Texas steers and heifers from entering an exclusion zone.
Read more about this topic: Invisible Fence
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“Tell me of the height of the mountains of the moon, or of the diameter of space, and I may believe you, but of the secret history of the Almighty, and I shall pronounce thee mad.”
—Henry David Thoreau (1817–1862)
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—Albert Camus (1913–1960)