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 hinted changes would be made before the 2014 World Cup in Brazil.
"We're talking about a goal not seen by the referee which is why we are talking about new technology," said Valcke.
"But 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, then why not?
"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."