Video replay technology was used to great effect in Spain's 2-0 friendly win at France on Tuesday, correctly ruling out an Antoine Griezmann goal before Spain's second effort was allowed.
With the scores level at 0-0 just after half-time, Griezmann headed home from a Layvin Kurzawa assist to give France a 1-0 lead.
But, after consulting with his video assistant, referee Felix Zwayer waved the goal offside due to replays showing Kurzawa had drifted behind the Spain defence ahead of his cross for the disallowed goal.
With Spain up 1-0 in the 77th minute, Gerard Deulofeu scored for La Roja off a low Jordi Alba cross. The goal was initially flagged by the linesman for offside but, following a brief review, the Milan attacker's strike was correctly given.
The match at the Stade de France was part of a video replay trial that was approved prior to the encounter by the French and Spanish associations, as well as by FIFA president Gianni Infantino.
Referees were given four main areas to focus on for video replays: deciding on whether or not a goal should count, penalty decisions, direct red cards, and correcting the identity of a penalised player.
Replay officials were stationed in a van parked outside the stadium. Based on the outcome on Tuesday, there will very likely be more matches decided in this fashion moving forward.