Hawkeye is a computer system used in numerous sports to visually track the trajectory of the ball and display a profile of its statistically most likely path as a moving image.The onscreen representation of the trajectory results is called Shot Spot. The Sony-owned Hawk-Eye system was developed in the United Kingdom by Paul Hawkins. The system was originally implemented in 2001.The system works via six (sometimes seven) high-performance cameras, normally positioned on the underside of the stadium roof, which track the ball from different angles. The video from the six cameras is then triangulated and combined to create a three-dimensional representation of the ball's trajectory. Hawk-Eye is not infallible, but is accurate to within 3.6 millimetres and generally trusted as an impartial second opinion in sports. It has been accepted by governing bodies in sports as a means of adjudication.