At the start of the 2026/27 season, European top-tier football is taking a major technological leap in officiating. Spain's LaLiga is becoming the first top European league to deploy smart, connected balls across every single league match. At the same time, the English Premier League has completed its rollout of semi-automated offside technology. Both competitions are addressing long-standing complaints about protracted video reviews and contentious officiating calls.
The system adopted in Spain is the result of a partnership between LaLiga, sportswear manufacturer Puma, and IoT tracking company Kinexon. Each ball is fitted with a central radio-frequency sensor that transmits motion metrics directly to the match analysis hub. Exactly 14 balls are synchronized for each fixture, covering the active match ball, the fourth official's backup, and 12 balls placed around the pitch perimeter in the multi-ball system. This ensures uninterrupted data capture even during rapid throw-ins or quick substitutions.
The connected ball delivers millisecond-level precision regarding the exact moment of contact between a player and the ball. These live sensor feeds are paired instantly with optical tracking cameras from the video assistant referee and offside algorithms. Match officials can definitively verify contested moments, including subtle handballs or the precise pass release point. Manual frame selection ambiguities are expected to disappear entirely from the Spanish top division.
In England, optical AI tracking takes center stage in modern officiating. The system finalized by the Premier League and refereeing body PGMOL relies on 12 dedicated tracking cameras mounted inside stadium roofs. These cameras track up to 29 individual body points on every player 50 times per second. The software constructs a precise 3D model of the pitch action to calculate offside positions automatically.
The Premier League anticipates a significant reduction in match stoppage duration as a result of the rollout. Official data shows that tight offside reviews in the VAR hub previously averaged 68 seconds. With the automated calculations, check durations are projected to drop to roughly 25 seconds. The AI automatically renders a 3D offside line and visual snapshot, which is sent directly to the video referee for prompt final validation.