How the goal-line technology debate progressed
The 2010 World Cup is not the first time the use of goal-line technology in football has been proposed.
1999: The Football League request permission to instal cameras in goalposts for the League Cup final - but the proposal is rejected by FIFA.
2006: The International FA Board (IFAB), the game's rule-making body, give approval to Adidas and Cairos Technology to experiment with a 'chip in the ball' called a 'smartball'.
2007: The 'smartball' is tested at the FIFA under-17 world championships in Peru but suffers some technical problems.
Meanwhile the Premier League commission Hawkeye to develop a system.
2008: FIFA plus the Welsh and Northern Irish FAs vote to put any technology experiments on ice in favour of Michel Platini's proposal for two extra assistant referees behind each goal-line. Premier League chairman Sir David Richards tells Platini: "You're killing football'.
2009: Thierry Henry's handball in the World Cup qualifier against Ireland prompts FIFA president Sepp Blatter to revisit the idea of technology and the Scottish FA decide they will raise it at the next IFAB meeting.
2010: March - FIFA, backed once again by Wales and Northern Ireland, again vote against technology. FIFA general secretary Jerome Valcke said: "This is an end to the potential use of technology within football."
June 26 - Valcke restates FIFA's position, saying the issue was "definitely not on the table".
June 27 - Frank Lampard's disallowed goal where the ball crossed the line leads to an international furore.
June 29 - Sepp Blatter announces goal-line technology will be considered again.