I have read this
http://www.premierleague.com/en-gb/news ... ology.html
but would be interested to know if anyone has more information about how this will work.
Will there be a challenge like in tennis from Referee? Manager? Captain? Goalkeeper?
will it be shown in ground (not all have big screeens) on TV?
It seems that the referee will be notified that the ball has crossed the line within one second (via some kind if vibration

Anyone have any thoughts/information?