Why and when it came in?The HawkEye linecalling system might have made its debut at a regular ATP tournament in Miami, but it was served to the masses for the first time at the 2006 US Open.Since time immemorial players had been carping about the eyesight of the line judges.Some took their grievances to the extreme, with Romanian bad boy Ilie Nastase throwing a shoe, a towel and several colourful insults over the course of his career.Obnoxious Americans Jimmy Connors and John McEnroe were not always enamoured of their inferiors ruling on the lines.HawkEye uses six or more computerlinked television cameras around the court. The computer reads in the video in real time, and tracks the path of the ball on each camera. These six separate views are then combined together to produce a 3D representation of the path of the ball.One of the biggest advantages of online commerce is the ability to collect and use this to inform your business strategy. These tools, like Google Analytics or Bing