the tests will be divided into three parts:
* shots from all over the pitch into an empty net. A 100% success rate is needed to pass phase one.
* 'dynamic' tests: a ball-shooting machine will fire shots into the goal where a fixed wall will at first stop the ball crossing the line, and then be moved back inside the goal at different distances from the line. A 90% success rate is needed to pass phase one.
* 'static' tests: a ball is placed on a sledge and moved at slow motion across the goal-line, sometimes with the ball rotating. A 90% success rate of this test is also needed to pass phase one.
For each test, an immediate signal that the ball has crossed the line must be sent to a referee's watch. Companies that successfully pass phase one of the process - which will take place between September and December - will be subjected to more rigorous and scientific testing in a second phase between March and June next year.
Isnt the above just over-complicating things?
No one is really, really asking for the above? with all the camera's in the stadium taking out 5 seconds to consult a video official is surely accurate, quick (enough) and very easily doable, without billions of tech hurdles to jump?