Video assistant referee

in association football, match official that reviews decisions made by the head referee with the use of video footage

video assistant referee(var) is a system that helps referees to decide better about faults of players,goals&etc in soccer match es.It used for the first time in the FIFA WORLD CUP 2018 Russia.

https://upload.wikimedia.org/wikipedia/commons/6/6f/VAR_System_Logo.svg