Hawk-Eye is a ball tracking system that uses multiple high-speed cameras to determine the statistically most likely path of a ball in sports like cricket, tennis, and snooker. It was developed in 2001 and first used professionally in cricket in 2005. Hawk-Eye works by triangulating the ball's position from images captured by 6 cameras placed around the field. This tracking data is then used to analyze elements like would the ball have hit the wicket or stumps. While an accurate system, Hawk-Eye is also costly to implement and occasionally struggles with curved ball trajectories. Overall, it has proven very successful in minimizing human error in officiating matches.