From a simple observation (an observer to two players), the application determines the priority areas of work to address identified shortcomings.
The observation is to simply touch the screen every time a player hits the steering wheel, indicating the points and faults.
At the end of the test (10 services each), a statistical report is displayed with the line of work preferred. A polar graph also reflects the areas of the game to strengthen.
Video handling: https://youtu.be/zZcnBR01rKM