Wonderful work to hopefully resolve many confusing judgements. Will this technology also be employed to prevent goal like that of Maradona by hand?
Player orientation will be very important so as not to dissapoint them. They should also add more microphones to each player so the fight like that of Zidane can be prevented, which cost France Coupe du Monde.
This technology was used for the America's Cup (won by Oracle), it completely changed the way this kind of boat race could be seen, especially for the non-expert watchers. It definitely made the races much more attractive.
Technology doesn't replace people. Maradona's "hand of god" was seen by many and was available on replays right there with those days of technology. Referee decision is not to be overruled by any technological advance - it's the "people and procedures" domain.
Zidane cannot be excused by any audio recording. Provocations are part of the sport psycho war and any player of World Cup level should know it.
Good to see that technology is helping more and more in sports and making referee's life easier. It is sometimes very difficult to judge if the ball has cross the line when it is in the air (e.g. when is corner kick is taken, players could disrupt referee's view from the sideline). Again I am not sure how a human could detect if the ball has crossed the line by 1.5cm...seems difficult to me. It would be interesting to watch Hawk-Eye system working in the coming mega tournament...I am sure there would be many such cases where the help of this technology would be useful.
I could realize the advantage of technology in the FIFA World Cup soccer tournament for the first time during Italy vs Costa Rica match, which was played a couple of days back. In the 2nd half, Costa Rica's Bryan Ruiz headed the ball off the bottom of the crossbar...The ball hit the crossbar, bounced just inside the goal line and then bounced back to play. By naked eye it was very difficult to judge if it was a goal or not. But the referee did not have any issues as the "Goal Line" system quickly confirmed the goal. Don't know if any other matches also could make use of the "Goal Line" technology.