The International FA Board (IFAB) announced they will go forward with final tests on two goal-line systems - British company Hawkeye's and GoalRef, a German-Danish firm - ahead of an ultimate decision in July.
Six other systems have been ruled out after a series of experiments by scientists in Switzerland.
FA general secretary Alex Horne said it was unlikely there would be time to install a system in time for the next Premier League season, but FIFA plan to have one for the Club World Cup in Japan in December if either of the two systems is approved.
The Confederations Cup in Brazil next year should also have a system in place and Horne said it was unlikely the Premier League would introduce a system until the 2013/14 season.
Horne said: "We decided that if there is a system working then we will do it.
"The reality is that asking 20 clubs to put something in place in five weeks, all tested and calibrated, is unlikely, and the Premier League would probably not want to introduce it midway through the competition.
"It's an important step forward for us but it is important that we do test it for failure."
Hawk-Eye's is a camera-based system while GoalRef uses a magnetic field around the goal with a special ball to identify a goal situation.
GoalRef's website highlights England's controversial 1966 World Cup final goal against West Germany as the kind of decision it can get right.
The second test phase to take place between now and June will make sure each system is robust enough to remain accurate in a match situation.
The systems will only act as an aid to referees, with a signal sent to the official only within a second of the ball crossing the line. It is up to the referee then to decide whether to award a goal or not.
Scottish FA chief executive Stewart Regan said the SPL were likely to be interested if the price was right.
He said: "Next season is probably too soon and the costs are unknown. I think over time technology will advance and prices ultimately will come down and there will come a point at which the SPL can enter this market.
"There is a demand for goal-line technology in the SPL and once the companies have passed the tests we would certainly be keen to try it."
The IFAB will also push ahead with allowing Muslim women to wear headscarves - but a safe variety which comes off straight away if pulled.
FIFA member Prince Ali of Jordan - with the support of FA chairman David Bernstein - made a proposal to overturn the ban on the scarves, which had been taken on safety grounds, and the IFAB are likely to give it the final go-ahead in July.
Approval was also granted to the FA's proposal to have a two-year experiment on rolling substitutes in amateur football.
FIFA withdrew a proposal to allow a fourth substitute during extra-time, and will consider whether players who are sent off for conceding a penalty should also get an automatic one-match ban.