FIFA Confirms Matanovic Touch Voiding Croatia Goal, Upholding Portugal Offside Call

Q: After solving offside with smart balls, which controversial refereeing decision is AI technology targeting next?

AI’s next major target is handball, with related work also expanding into ball-out-of-play and goalkeeper-interference decisions. The Croatia-Portugal case showed what smart-ball and semi-automated offside systems do well: they answer an objective question — exactly who touched the ball, and when. FIFA’s connected-ball sensor, sampling at 500 times per second, can provide a precise timestamp that helps VAR settle offside disputes quickly and publicly. Handball is the next frontier because it remains one of football’s most disputed calls. Ball sensors can already detect whether contact occurred, and tournaments have tested that capability. But the harder issue is not contact itself; it is whether the action should be punished under the law — for example, whether the arm position was unnatural or the contact materially affected play. That is why experts describe handball as the most difficult decision for AI to assist without creating new arguments. At the 2026 World Cup, FIFA is also using AI-driven tracking and connected-ball data to tackle other contentious calls. These include whether the ball fully went out of play for corners or throw-ins, and whether an offside player obstructed a goalkeeper’s line of sight. Those are narrower, more measurable problems than handball, so they are easier to support with 3D visualization and sensor data. So while offside is the clearest success story, handball is the most controversial decision AI is now trying to crack.

Q: Beyond a player's boot, what else can trigger the World Cup smart ball's 'heartbeat' sensor and alter a match?

Beyond a boot, the World Cup smart ball’s sensor can be triggered by other body contact — especially a hand, arm or head — as well as slight deflections and rebounds. FIFA’s Connected Ball Technology inside the Adidas Trionda uses a 500Hz inertial measurement unit that records movement 500 times per second. That means it does not just register a clean kick; it can detect very small changes caused by a glance off the head, a brush of the hand, or a faint touch in a crowded sequence. In the Croatia-Portugal case, that is what settled the dispute: the ball’s “heartbeat” data showed Igor Matanović had made contact, fixing the exact touch point for the offside review. That matters because the sensor can directly change decisions on offside and handball. If it detects a touch by an attacker before a pass, VAR can reset the offside phase or confirm that an offside player became involved after the last legal touch. If it detects hand contact in the buildup, it can support a handball review and lead to a goal being ruled out. The technology has already been used this way in major tournaments. FIFA previously used connected-ball data to show Cristiano Ronaldo did not touch a cross against Uruguay in 2022, and similar sensor evidence has been cited in handball and deflection cases since. In short, any meaningful external contact with the ball — not just a boot — can trigger the sensor and alter a match.

3 articles · Updated · Yahoo Sport Australia · Jul 3

FIFA said sensor data from the Adidas Trionda match ball proved Croatia's Igor Matanovic touched the ball before Josko Gvardiol's late finish against Portugal.
That contact made Gvardiol offside in the buildup, FIFA said, validating the referee's decision to disallow what would have been Croatia's game-tying goal.
Fans had heavily scrutinized replays because the ball appeared not to brush Matanovic's head, turning the decision into one of the match's biggest controversies.
The ruling leaves Croatia without a late equalizer and underscores FIFA's use of Connected Ball Technology to settle tight World Cup calls.

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Yahoo Sport Australia6h ago

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ITVX6h ago

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AOL6h ago

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After solving offside with smart balls, which controversial refereeing decision is AI technology targeting next?

Beyond a player's boot, what else can trigger the World Cup smart ball's 'heartbeat' sensor and alter a match?

As technology eliminates refereeing errors in football, is the sport's unpredictable human drama being lost forever?

FIFA Confirms Matanovic Touch Voiding Croatia Goal, Upholding Portugal Offside Call

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