It's one of the greatest debates on football - did the ball cross the line, or didn't it? FIFA is testing two different goal-line technologies to clear up arguments about dodgy refereeing once and for all. One is the Hawkeye innovations system, developed by a British firm, based on lots of video cameras. Duration: 00:58
![](https://i.ytimg.com/vi/PosPemlf2LI/mqdefault.jpg)