VAR & Offside at World Cup 2026: How the Technology Works
Few developments in football have generated as much debate as VAR. Introduced at the 2018 World Cup in Russia, Video Assistant Referee technology has been standard at every World Cup since and continues to evolve. At World Cup 2026, FIFA will deploy the most sophisticated version yet, including semi-automated offside technology that promises faster and more accurate decisions. Here is how it all works.
What is VAR?
VAR stands for Video Assistant Referee. It is a system where a team of dedicated video officials, watching the match from a Video Operations Centre (VOC), review decisions made by the on-field referee.
VAR does not replace the referee. It exists specifically to correct "clear and obvious errors" in four defined categories:
- Goals and offences leading to goals: Was the ball in play? Was there a handball or foul in the build-up?
- Penalty decisions: Was a foul inside the box? Was there a handball?
- Direct red card decisions: Serious fouls, violent conduct, or denying an obvious goal-scoring opportunity
- Mistaken identity: Did the referee caution or send off the wrong player?
VAR does not review:
- Yellow card decisions (except in certain penalty area incidents)
- Throw-ins and goal kicks
- Fouls outside the penalty area that do not lead to goals
- General play decisions that do not fit the four categories
How a VAR Review Works
Step 1: Incident occurs. Play continues, or the referee stops play.
Step 2: VAR team review. The video officials in the operations centre immediately review the incident from multiple camera angles. In the vast majority of cases, they confirm the on-field decision is correct and play proceeds without interruption.
Step 3: Communication to referee. If the VAR team identifies a clear and obvious error, they communicate to the on-field referee via earpiece: "Check complete, check complete." If a review is recommended, they say: "On-review, on-review."
Step 4: On-field review (OFR). The referee either accepts the VAR recommendation and changes the decision immediately, or they walk to the designated review monitor at the side of the pitch to watch the footage themselves. The referee makes the final call, VAR recommends; the referee decides.
Step 5: Decision announced. The referee signals the outcome. Play resumes.
The entire process typically takes 60-90 seconds for a straightforward review. Complex incidents, particularly those requiring frame-by-frame analysis, can take 2-3 minutes.
What the "On Review" Sign Means in the Stadium
When you are in the stadium and play is stopped for a VAR review, the giant screens will typically show a graphic indicating "VAR Review in Progress." You may see the referee receive an earpiece communication and then either make a signal or walk to the monitor at the side of the pitch.
This is normal. Do not panic, and do not assume a goal has been disallowed until the referee signals the outcome. Many reviews confirm the original decision. When you hear the referee's whistle and see them signal a goal (arms wide) or award a penalty (pointing to the spot), the decision is confirmed.
Semi-Automated Offside Technology (SAOT)
Offside has been the source of VAR's most controversial and time-consuming reviews. At Qatar 2022, some offside decisions required several minutes of analysis to determine whether a millimetre of a shoulder was beyond the defensive line. Semi-automated offside technology, introduced at Qatar 2022 and refined further for 2026, addresses this.
How SAOT works:
FIFA installs 12 dedicated tracking cameras around each stadium. These cameras track the position of every player on the pitch at 50 frames per second (50 times per second). The system tracks 29 data points on each player's body, joints and extremities, building a three-dimensional model of every player's position.
When a forward receives the ball, the system automatically calculates whether any part of their body eligible to score was beyond the last defender at the moment the ball was played. The system generates a 3D model showing the positional relationship between attacker and defender, which is then reviewed by a human VAR official to confirm the automated finding.
The key improvement: SAOT delivers a definitive answer in 20-30 seconds rather than the 2-3 minutes required for manual frame-by-frame analysis. The 3D model also eliminates the optical illusion problems that affected 2D line drawings, straight lines drawn across a 2D camera image could be misleading due to camera angle and player body position.
Goal Line Technology
In addition to VAR and SAOT, World Cup 2026 stadiums use Goal Line Technology (GLT), a camera-based system that determines definitively whether the ball has crossed the goal line. The system sends an immediate notification to the referee's watch within one second. GLT is not part of VAR, it is a separate system that operates instantly and automatically.
Common VAR Decisions and What They Mean
Goal disallowed: VAR identified an offence in the build-up, usually offside, handball, or a foul. The original decision to award the goal is overturned.
Goal awarded after delay: Play was stopped for review, often offside was being checked, and the original goal is confirmed.
Penalty awarded via VAR: The on-field referee missed a foul in the penalty area. VAR identified it as a clear and obvious error and recommended a penalty review.
Penalty overturned: A penalty was awarded on the field, but VAR review showed no foul occurred, or that the foul occurred outside the box.
Red card via VAR: The referee did not see a violent or reckless incident during play. VAR flagged it for review and the referee issued a retrospective red card.
Red card rescinded (via Captain's communication): In some cases, the referee can be alerted to a potential error in the identity of a carded player. VAR reviews and confirms or corrects.
Understanding these outcomes means that when play stops at World Cup 2026 for what feels like an inexplicable reason, you will know exactly what is being reviewed and why.