FIFA hopes the rolling out of its semi-automated offside technology being trialled at the Club World Cup will not only speed up decision-making but offer increased clarity for football supporters. The optical tracking system was first tested at last year's Arab Cup in Qatar, and the ultimate goal is for it to be fully in use for the World Cup in the Gulf state later this year. Pierluigi Collina, chairman of FIFA's referees committee, on Wednesday told reporters VAR had proved "very successful" since its introduction but conceded more consistency is needed.