That bad call, however, would still not have been avoided even if the technology that FIFA has approved today—through the International Football Association Board (IFAB)—had been in place.
The approved tech only affects ghost goals. Ghost goals occur when the ball passes the goal line but then jumps straight back out. Technically, it is a goal. But referees sometimes don't call it as such because they can't see it from their point of view—even while the entire world can see it clearly on their TVs.
Other times, the refs seem to have ignoble intentions—like when Lampard scored for England against Germany in South Africa '10, or Spain's Michel kicked the ball inside Brazil's goal in Mexico '86 only for it to bounce out.
The first technology is called HawkEye, which had been used in tennis for quite some time. HawkEye's cameras will be installed on the pitch's goalposts. They will track the ball and make sure it has passed the line.
For redundancy, there will be another tracking technology called GoalRef. Developed by Fraunhofer Institute for Integrated Circuits IIS, GoalRef uses a low magnetic field around the goals, creating an invisible radio curtain. When the ball fully goes through that curtain, the magnetic field changes and the system sends an alert to the referee's wristwatch.Both will be great additions that will avoid extremely bad and embarrassing decisions by the referee.
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