Colina discovered: "The sensor cannot detect contact with hair"

We have reached the very end of the World Cup. Although the grand final is still to come, impressions are already being summed up and controversial situations are being analyzed.

Two of them are connected to a sensor in the ball. This was also discussed by the president of the FIFA referees committee, Pierluigi Collina.

In an extensive interview with "Gazeta" he talked about whether the ball touched the cable holding the camera before England's goal in the quarter-final clash with Norway.

"It's incredible that people can't be convinced that the ball didn't touch any cables. A graph was shown where, when the ball was either touched by a player or an object, a peak was visible. In this case, a straight line was visible on the graph from the moment the goalkeeper kicked the ball until another player controlled it. There was just a slight wave associated with the air," the legendary Italian referee clearly stated.

Another controversial situation related to the sensor was in the match between Portugal and Croatia. Namely, Igor Matanović touched the ball in the middle of the stoppage time of the match, according to the sensor, and Mario Pašalić was found to be offside, who later assisted Joško Guardiola to equalize for the "fiery" team.

After a long VAR check, the goal was disallowed because the sensor showed that the Freiburg striker had touched the ball. The Croatians were very unhappy with this decision. Kolina said that the sensor cannot detect contact with the hair, but with the head.

"The graph was clear here too. There is an oscillation when it touches the head of the Croatian striker, then a straight line and a new oscillation when the ball touches the back of the Portuguese defender. The system does not detect contact with the hair, but with the head," Kolina revealed.