Game of cricket is improving day by day. Development of the sport technologies is one of the major reasons behind this improvement. Hawk Eye is one such technology which is been used in the game of cricket. Due to numerous amount of assistance given by this technology for the improvement of the quality of the game it has become very popular among the public. But due to a lees number of researches carried out on this topic the public understanding regarding the technology is very much law. Therefore this paper aims to discuss the principal behind the Hawk Eye, multiple uses of it in the game of cricket, accuracy of the system, reliability of the system while suggesting future enhancements to be done.