The images are then sent out to broadcasting companies and displayed on the arenas' screens.

A difficult-to-assess offside blowout has an average of 70 seconds before the referee can give a decision, with the new system Fifa aims for 20-25 seconds.

- In some cases, the decisions take far too long.

For VAR referees, time flies, but for players, coaches and spectators, it feels like an eternity, said Pierluigi Collina, Fifa's referee.

Each arena in Qatar will have 12 cameras that analyze 29 data points on the players 50 times per second.

The sensor in the ball should give a more accurate time when the ball was passed.

The data generated then presents an image that shows whether it is offside or not.

The VAR judge is responsible for presenting the result to the judge.

The system was tested during the Arab Championships and the Club World Cup.

ARCHIVE: This is how it sounded when SVT's reporter called the World Cup hotels:

Javascript is disabled

Javascript must be turned on to play video

Read more about browser support

Here the hotel nobs gay guests Photo: SVT / DR / TT