The long wait for goal-line technology will reach its conclusion this week when football's law-makers meet to approve two systems.
The International FA Board (IFAB) is set to give the go ahead to both the Hawk-Eye and the GoalRef systems, which will give the green light to the
A comprehensive series of tests have been carried out on the systems by Swiss scientists and IFAB sources have confirmed to the
There will still be a delay before either system can be used in competitive football, however - each will need to be licensed, installed and then tested in every venue to make sure it is working properly.
The IFAB, which is meeting in
It means referees can still decide not to award a goal based on what they see even if the systems are indicating the ball has crossed the line.
The clamour increased last month after
However, FIFA is insistent that, initially at least, the technology's signal of a goal should only be transmitted to the match officials and not to the crowd or TV audience.
The IFAB is made up of FIFA, which has four votes, and the four home nations, who have one vote each. Any law change needs at least six votes.
The body will also consider whether the UEFA experiment with extra officials has been a success and should be continued, but UEFA president Michel Platini will not be going to
The England v Ukraine incident, which saw
No goal was awarded despite the extra official being no more than 10 yards away and staring straight along the line.
That suited Blatter perfectly, who opposes the extra two officials on the grounds that in many countries there are not a sufficient number of referees.
The tests on the technology were carried out by the EMPA - the
The Hawk-Eye system - developed by a British company now owned by Sony - is based on cameras and GoalRef, a Danish-German development, uses magnetic fields.
Each system is required to send an immediate message to a watch worn by the match officials within a second of the ball crossing the line.
The tests included exposing the equipment and watches to extreme heat and cold, as well as humidity and heavy rain. Experiments also took place during live matches including England's match against
FIFA's Club World Cup in
The IFAB is also due to rule on whether special headscarves can be worn during matches after pressure from some Muslim countries.
The body will hear a report from FIFA's medical committee which warns that headscarves could in some cases be a danger to players.