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Why is a fencing piste made of conductive material?
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Giovanna Trillini (rear) of Italy successfully defending her world champion foil title against Wang Huifeng of China at the 1992 Olympics.
In the sport of fencing, the piste is constructed from metal or another conductive material primarily to ensure accurate scoring in the épée discipline.12
Because the target area in épée is the entire body, the weapon is designed to register a hit whenever its pressure-sensitive tip is depressed against any surface not connected to the scoring box. To prevent accidental contact with the floor from being incorrectly recorded as a valid touch, the conductive piste is attached to the scoring box by a grounding wire. This configuration ensures that hits to the piste do not register as points, allowing the system to distinguish between a strike on an opponent and contact with the fencing area itself.2