Did the ball cross the line? It's a question which football fans have been asking at least since the 1966 World Cup final, when England striker Geoff Hurst's extra time goal against Germany was given by a Swiss referee on the advice of his Soviet linesman.
File picture. This last-16 match at the World Cup two years ago in South Africa went a long way to convincing FIFA that the technology had to come to the rescue. England's Frank Lampard had what appeared to be a perfectly good goal ruled out against Germany.
World governing body FIFA has been trying out two technologies and will put them to the tournament test at the upcoming Club World Cup starting December 6 in Japan with a view to using the most accurate version at the 2014 World Cup in Brazil.
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