Fifa to make refereeing changes for future World Cups
Goal-line technology is back on the agenda after Fifa revealed this World Cup is set to be the last tournament under the existing refereeing system.
Fifa general secretary Jerome Valcke told the BBC that TV replays showing Frank Lampard scoring a goal against Germany was a "bad day" for organisers.
And Valcke suggested changes will be made before the 2014 World Cup.
"We're talking about a goal not seen by the referee which is why we are talking about new technology," said Valcke.
Fifa's general secretary also suggested that the use of two extra referees positioned on the goal-line - a system trialled last season in the Europa League and set to be used in the Champions League this coming season - might be used in future World Cups.
"Let's see if this system will help or whether giving the referee an additional four eyes will give him the comfort and make duty easier to perform," added Valcke.
"I would say that it is the final World Cup with the current refereeing system."
Although Valcke's comments will be interpreted as a change of policy by Fifa following the International Football Association Board's (Ifab) decision to reject goal-line technology and other aids for referees in March, the Fifa general secretary wants the whole approach to refereeing to be reformed.
"The teams and the players are so strong and so fast. The game is different and the referees are older than all the players," said Valcke.
"The game is so fast, the ball is flying so quickly, we have to help them and we have to do something and that's why I say it is the last World Cup under the current system."
Fifa president Sepp Blatter has repeatedly rejected calls for the introduction of goal-line technology or TV replays, insisting an element of human error has always been a part of the game.
Opponents have also pointed to concerns over universality - that all levels of the game should be subjected to the same rules and methods of refereeing.
But following the Lampard "goal" in England's 4-1 defeat by Germany and Carlos Tevez's offside strike for Argentina against Mexico in a game the South American side won 3-1, Blatter performed a U-turn, saying that it would be a "nonsense" not to reopen the file on technology.
Ifab - the game's rule making body which consists of representatives of the English, Scottish, Northern Irish and Welsh FAs as well as four representatives from Fifa - is due to hold a meeting on 21 July where the issue is expected to be discussed.
But Valcke said it was unlikely serious discussions would be held until a further meeting scheduled for October.
In March, Ifab heard presentations from two companies pitching to introduce systems which they say provide definitive proof when the ball has crossed the line for a goal.
But both the proposals from Cairos Goal-line technology, which uses a microchip inside a football and magnetic fields around the goal line, and Hawk-Eye, which uses six television cameras positioned around the goal, were rejected.
The Cairos system was tested by Fifa in the World Club Championships in Japan in 2007, but despite their claims that the test was a success, Ifab again rejected the proposal in March 2008.
It was debated again in 2009 but again turned down.
Both Hawk-Eye and Cairos insist cost is not an issue as they offered to pay for the installation of the system in return for a share of sponsorship rights.
Ifab also turned down the chance to introduce the system of two extra referees positioned on the goal-line in time for the World Cup in South Africa.
