In modern fencing the playing area, called a piste, is 1.5-2 metres wide and 14 metres long with a 2-metre runoff at each end. At competitions, Swiss Timing provides a multi-piste scoring, control, and hit-registering system (the on-venue results or OVR system) along with associated units that display results recorded by the system.
The hit registration machine is positioned opposite the referee (on the other side of the piste). Fencers are connected to the hit registration system with wires.
From the tableaux of 32 or 64 (depending on the event), a video replay system is used. A camera operated by an individual following the fight is positioned either at least 6 meters away from the piste or in the stands. When a hit has been recorded, the head referee can, in case of any doubt, replay the previous 10 seconds of the fight at the official table located beside the middle of the piste, at whatever speed is necessary to confirm the hit (i.e. between 10 percent and 100 percent of real-time speed).