Hawk-Eye Sensors
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Line Calling Approaches
With Hawk-Eye Sensors you can still use the challenge method or let Hawk-Eye make the calls real time.

Challenge
Challege
Challenge Method
Hawk-Eye Sensors supports the “Challenge Method” accepted by the ITF.
 Players can either review the Hawk-Eye Sensors Monitor when a challenge is called which indicates the status of the last shot, watch the associated live video replay if desired, or have the supervisor review the system. Hawk-Eye tracks all close line calls, and the time since the impact.
Real Time Line Calling
Hawk-Eye Sensors supports “Real-Time Line Calling”. The system alerts the players on all close shots with respect to both service boxes and rallying. This ensures that the system does not interfere with the flow of the game.