Sweden's VAR Controversy: The Impact of Connected Ball Technology

Sweden’s fourth goal against Tunisia on Sunday night should have been routine: a late strike in a 5-1 World Cup win, a footnote to a dominant performance. Instead, it became a showcase for football’s newest piece of forensic officiating – and a flashpoint for Tunisian frustration.

Mattias Svanberg had been on the pitch for barely 18 seconds when he swept in Yasin Ayari’s free-kick in the second half. The flag went up. Offside. The celebrations stalled, Sweden’s substitutes half-froze on the touchline, and Tunisia exhaled.

Then the protests started.

Sweden’s players and coaching staff surrounded the officials, insisting there had been a crucial touch in the box. The VAR team went to work. What followed was not the usual freeze-frame and line-drawing that fans have grown used to, but something more subtle: a waveform, a spike, a digital heartbeat from inside the ball itself.

The faintest touch, the biggest call

At the heart of the decision was technology borrowed in spirit from cricket’s Snickometer, long known simply as “Snicko”. In cricket, it listens for the tiniest deviation, the faintest edge from bat to ball. In football, the World Cup’s Trionda match ball, made by Adidas, now carries its own version of that sensitivity.

A microchip embedded in the ball tracks every contact. Every nudge, every brush of leather on boot or glove, is captured and sent instantly to the VAR officials as data. Adidas calls it Connected Ball Technology. For referees, it means hard evidence in real time.

As Ayari’s free-kick swung into the area, the replay feed showed a flat waveform on the screen. Then, as the ball passed Alexander Isak’s outstretched right foot, a sharp spike cut through the line. The sensor had picked up a touch so slight it was barely visible to the naked eye.

That touch changed everything.

When Ayari struck the free-kick, Svanberg stood in an offside position. By the time Isak brushed the ball, Svanberg had retreated into an onside lane. The chip inside the Trionda confirmed contact from Isak; the laws of the game did the rest. Offside became onside. Disallowed became 5-1.

“It is a good finish by Svanberg, but I can understand why the Tunisian players will be disappointed because when you look at it, it didn't look like there was a touch,” former Republic of Ireland striker Clinton Morrison said on BBC Radio 5 Live. “It must have been the slightest touch off the outside of his right boot. Credit to VAR, credit to the referee. They got it spot on.”

Tunisia saw a routine offside call overturned by a spike on a screen. Sweden saw cutting-edge justice.

From cricket’s edges to football’s fine margins

For decades, “Snicko” has belonged to cricket. In that sport, Snickometer is part of the decision review system, used to decide whether a batter has feathered the ball through to the wicketkeeper or slipped away unscathed.

The process is simple in theory, brutal in its precision. Video replays roll frame by frame while an audio-visual waveform sits alongside, ready to jump at the slightest contact between bat and ball. One clean spike at the exact moment the ball passes the bat can send a batter back to the pavilion.

English computer scientist Allan Plaskett created Snickometer in the mid-1990s. It became a staple of televised cricket, a familiar graphic in living rooms around the world. Its role at the very top, though, has started to fade. It no longer features in Test matches in England, where UltraEdge – a more advanced system – has taken over. Snickometer still operates in Australia and New Zealand, but even there its influence is waning as faster, sharper tools emerge.

Its limitations have been exposed. Working at 340 frames per second, it lags behind newer technologies that can track more data, more quickly. And it is not immune to human error. During the 2025-26 Ashes, Australian batter Alex Carey survived a crucial decision in the third Test after operators made a mistake using Snickometer. Carey, on 72 at the time, went on to score 106 in Adelaide. One misread, one reprieve, one century.

Football’s version is different in design but similar in spirit. It does not listen for sound off the bat; it reads the ball’s own internal sensors. Where cricket’s Snickometer relies on audio spikes matched to video, Adidas’ Connected Ball Technology feeds pure contact data directly to VAR.

The principle, though, is familiar: when the human eye hesitates, the waveform speaks.

A growing footprint in the biggest games

This is not the first time “Snicko-style” technology has shaped a major football match.

At the 2022 World Cup in Qatar, it settled a debate that would once have raged for days. Portugal’s opening goal in a 2-0 win over Uruguay came from a Bruno Fernandes cross that drifted over Sergio Rochet and into the net. Cristiano Ronaldo wheeled away, claiming the faintest of headers. The stadium announcer even credited him at first.

The ball’s data told a different story. No touch from Ronaldo, no spike to back his claim. The goal belonged to Fernandes.

At Euro 2024, the same technology worked in the opposite direction for Belgium. Romelu Lukaku thought he had dragged his side level against Slovakia, only for the review to strip the goal away. The connected ball data, combined with the replays, showed a clear handball from Lois Openda in the build-up. Once again, the microscopic details overruled the raw emotion.

On Sunday night, Svanberg’s strike joined that growing list. What once would have been settled by guesswork and gut instinct now hangs on a digital trace inside the ball.

Adidas argues that this system “enables faster in-game officiating decisions and more insight into gameplay than ever before.” Referees gain certainty. Coaches gain data. Players, though, must live with a new reality: the game now remembers every touch, even the ones nobody sees.

For Tunisia, that reality stung. For Sweden, it underlined the ruthlessness of modern elite football, where even a substitute’s first touch, arriving 18 seconds after stepping onto the pitch, can be validated not by a linesman’s flag, but by a spike on a screen and a chip inside the ball.

The margins have never been finer. The question now is how many more goals – and how many more arguments – this invisible technology will decide before the tournament is done.