The second phase of testing with Hawk-Eye's goal-line technology system has started, less than two months before soccer's rule-makers decide whether it can be used in games.

Experiments with the Sony Corp.-owned system were conducted at Southampton's St. Mary's Stadium on Thursday. Hawk-Eye is a camera-based ball-tracking system used in tennis and cricket.

The other system being considered by the International Football Association Board is the GoalRef system, which will be tested in Danish matches.

GoalRef, owned by a German-Danish company, uses a magnetic field with a special ball.

IFAB is set to make a final decision on whether to allow the use of goal-line technology at a meeting July 2.