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This guide focuses on FIFA’s semi-automated offside technology (SAOT) as documented for the 2022 World Cup.
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It combines player and ball tracking to assist match officials; other sports and officiating tools have different designs and rules.
For the FIFA 2022 implementation, twelve dedicated cameras tracked the ball and up to 29 relevant player data points 50 times per second. A ball-mounted inertial measurement unit sent data 500 times per second to help identify the kick point in tight incidents. The system generated an alert and visualization for video match officials, who validated the kick point and offside line before the referee was informed. FIFA says other judgments, such as whether an offside-positioned player interfered with an opponent, remain for the referee. If SAOT malfunctions, VAR can use established tools such as crosshairs and triangulation.
Review FIFA’s documented camera and ball-sensor inputs for a tight offside decision.
Use the system’s proposed kick point and virtual line as evidence for official review.
Retain manual offside tools if the tracking system fails.
Explain that rule interpretation remains with match officials.
FIFA’s documented testing criteria and workflow are specific to the system version and tournament context. Future changes should be evaluated against the relevant sport’s rules, measurement accuracy, failure procedures, and human review requirements; this example does not establish how other sports automate officiating.
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This guide focuses on FIFA’s semi-automated offside technology (SAOT) as documented for the 2022 World Cup. It combines player and ball tracking to assist match officials; other sports and officiating tools have different designs and rules.
FIFA states the cameras tracked up to 29 player data points 50 times per second.
FIFA says the ball sensor data helps precisely detect the kick point in tight incidents.
IFAB distinguishes an offside position from committing an offside offence through involvement in play.
FIFA says video match officials manually check the system-selected kick point and generated line.
FIFA identifies crosshairs and triangulation as other tools available if SAOT malfunctions.
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