Goal-line technology will be used at the 2014 World Cup, Fifa has announced.
Following a successful trial at the Club World Cup in Japan last year, world football's governing body has today confirmed the technology will also be in place at the Confederations Cup in the summer ahead of next year's showpiece in Brazil.
"With different technologies on the market, FIFA has launched a tender today, setting out the technical requirements for the two forthcoming competitions in Brazil.
The two GLT providers already licensed under FIFA’s Quality Programme for GLT, and other GLT providers currently in the licensing process (that must have passed all relevant tests as of today) are invited to submit tenders.
Interested GLT companies will be invited to join an inspection visit to the Confederations Cup venues, currently scheduled for mid-March, with a final decision due to be confirmed in early April."
Hawk-Eye and GoalRef both have FIFA approval and are set to compete against each other, and possibly other manufacturers, for the World Cup rights.
HawkEye involves the use of cameras whereas GoalRef is a more scientific system which involves an electronic circuit in the ball, with goal confirmation being transmitted to a watch worn by the referee almost immediately.
Fifa's much derided president Sepp Blatter has previously said he was compelled to introduce the technology after Frank Lampard was denied a clear goal playing for England against Germany at the 2010 World Cup.
He reaffirmed his desire for the technology to be brought in after Ukraine's Marko Dević was denied an equaliser against England at Euro 2012.
Tennis and cricket already use technology at the highest level, which has alleviated the pressure on umpires and players able to turn to replays of key incidents for clarification.
1966 and all that...
Roy Carroll's Old Trafford infamy, January 2005
Liverpool are helped over the line in the 2005 Champions League semi-final
A pivotal moment in West Ham's successful bid to avoid relegation at Ewood Park, 2007
Watford v Reading, 2008
Karma for 1966 in 2010
Chelsea v Tottenham Hotspur - Premier League
Gomes recovers after his howler saw the ball trickle towards the line, but the myopic linesman gave Chelsea the goal with Spurs 1-0 up. The Blues won 2-1 courtesy of an offside goal
Everyone thinks Sulley Muntari makes it 2-0 to Milan against Juventus, but the goal isn't given. Juve draw the game 1-1 and go unbeaten for the entire 2011/12 season
QPR should have gone 1-0 up but don't. They lose 2-1
John Terry at the centre of Chelsea's wrongly awarded goal