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2. Pet fence - Wikipedia

   en.wikipedia.org/wiki/Pet_fence

   A pet fence or radio fence, is an electronic system designed to keep a pet or other domestic animal within a set of predefined boundaries without the use of a physical barrier. A mild electric shock is delivered by an electronic collar if its warning sound is ignored. The system was first invented and patented by Richard Peck in 1973. [1]

3. Invisible Fence Inc. - Wikipedia

   en.wikipedia.org/wiki/Invisible_Fence_Inc.

   Invisible Fence Inc. (commonly referred to as Invisible Fence Brand) is a company that designs radio pet fences for cats and dogs. Manufactured and distributed by Radio System Corporation, the company sells wireless and fenceless systems that were first introduced in 1973. [ 1 ]

4. Remote control animal - Wikipedia

   en.wikipedia.org/wiki/Remote_control_animal

   In 2007, it was reported that scientists at the Commonwealth Scientific and Industrial Research Organisation had developed a prototype "invisible fence" using the Global Positioning System (GPS) in a project nicknamed Bovines Without Borders. The system uses battery-powered collars that emit a sound to warn cattle when they are approaching a ...

5. Shock collar - Wikipedia

   en.wikipedia.org/wiki/Shock_collar

   A typical shock collar. Shock collar used on a riot police dog in 2004 in Würzburg.Two years later, [1] Germany banned the use of shock collars, even by police. [2]A shock collar or remote training collar, also known as an e-collar, Ecollar, or electronic collar, is a type of training collar that delivers shocks to the neck of a dog [3] to change behavior.

6. Whistle (company) - Wikipedia

   en.wikipedia.org/wiki/Whistle_(company)

   [11] [12] [13] In January 2015, the company acquired Tagg, a competing startup based in San Diego, for an undisclosed sum for its battery life and location-tracking intellectual property, and Tagg's CEO, Scott Neuberger, joined Whistle. [14] Tagg had started as a Qualcomm subsidiary in 2010 and released its tracking device one year before Whistle.

7. Electric fence - Wikipedia

   en.wikipedia.org/wiki/Electric_fence

   Portable fence energisers are made for temporary fencing, powered solely by batteries, or by a battery kept charged by a small solar panel. Rapid laying-out and removal of multiple-strand temporary electric fencing over a large area may be done using a set of reels mounted on a tractor or all-terrain vehicle .