Spanish researchers at the Universidad Carlos III de Madrid have recorded over 500 simulated offside football plays in stereoscopic 3D to help train referees. The new method should give refs a more immersive sense of what it’s like when somebody is actually offside, urging them to blow their whistle as soon as possible.

We don’t know if any referees will use the 3D recordings before the 2014 World Cup in Brazil, so we may still have to put up with wrong calls and more controversy.