Editing Hawk-Eye (section)

===Football===
{{main|Goal-line technology}}

Hawk-Eye is one of the [[goal-line technology]] (GLT) systems authorised by [[FIFA]]. Hawk-Eye tracks the ball, and informs the [[referee (association football)|referee]] if a ball fully crosses the goal line into the [[Football pitch#Goals|goal]]. The purpose of the system is to eliminate errors in assessing if a [[Scoring in association football|goal]] was scored. The Hawk-Eye system was one of the systems trialled by the sport's governors prior to the 2012 change to the [[Laws of the Game (association football)|Laws of the Game]] that made GLT a permanent part of the game,<ref name="March 2012 IFAB/FIFA">{{cite news|last=Conway|first=Richard|title=Goal-line technology edges closer |url=https://www.bbc.co.uk/sport/0/football/17228500|access-date=3 March 2012|publisher=[[BBC Sport]]|date=15 April 2012}}</ref> and it has been used in various competitions since then. GLT is not compulsory and, owing to the cost of Hawk-Eye and its competitors, systems are only deployed in a few high-level competitions.

{{Asof|July 2017}}, licensed Hawk-Eye systems were installed at 96 stadiums. By number of installations, Hawk-Eye is the most popular GLT system.<ref>{{cite web|title=Football Technology – RESOURCE HUB|url=https://football-technology.fifa.com/en/resource-hub/certified-product-database/goal-line-technology/installations/|publisher=FIFA|access-date=13 July 2017|archive-url=https://web.archive.org/web/20180617015515/https://football-technology.fifa.com/en/resource-hub/certified-product-database/goal-line-technology/installations/|archive-date=17 June 2018|url-status=dead}}</ref> Hawk-Eye is the system used in the 
[[Premier League]],<ref name="BBC_Premier">{{cite news | url=https://www.bbc.co.uk/sport/0/football/22107409 | title=Goal-line technology: Premier League votes in favour for 2013-14 | work=BBC | date=11 April 2013 | access-date=11 April 2013}}</ref> [[Serie A]]<ref>{{cite news|title=Serie A approves goal-line technology for next season|url=http://www.espnfc.co.uk/italian-serie-a/story/2297461/serie-a-approves-goal-line-technology-for-next-season|access-date=6 January 2016|work=ESPN FC|date=13 February 2015}}</ref> and [[Bundesliga]]<ref>{{cite web|url=http://www.carlyleobserver.com/sports/bundesliga-approves-hawk-eye-goal-line-technology-for-new-season-1.1650074|title=Bundesliga approves Hawk-Eye goal-line technology for new season|access-date=4 December 2014|archive-date=29 October 2020|archive-url=https://web.archive.org/web/20201029003339/https://www.carlyleobserver.com/sports/bundesliga-approves-hawk-eye-goal-line-technology-for-new-season-1.1650074|url-status=dead}}</ref> among other leagues.