Video Assistant Referees (VAR) was introduced at Premier League matches from Season 2019/20.
Goal Decision System is used at all Premier League matches. It is supplied by Hawk-Eye, the world’s leading provider of vision processing instruments to sport. The system aids referees with close calls, in cases where there may be some doubt if the whole ball has crossed the goal line.
Match officials use microphones to keep in contact with each other during the game.
Vanishing Spray is carried by referees, who can use it to mark out distances between defending players and the ball, before a free-kick is taken.
The use of technology in matches is primarily guided by the Laws of the Game.