FoxTrax was a specialized ice hockey

Ice hockey

Ice hockey, often referred to as hockey, is a team sport played on ice, in which skaters use wooden or composite sticks to shoot a hard rubber puck into their opponent's net. The game is played between two teams of six players each. Five members of each team skate up and down the ice trying to take...

 puck

Hockey puck

A puck is a disk used in various games serving the same functions as a ball does in ball games. The best-known use of pucks is in ice hockey, a major international sport.- Etymology :The origin of the word "puck" is obscure...

 with internal electronics that allowed its position to be tracked designed for NHL

National Hockey League

The National Hockey League is an unincorporated not-for-profit association which operates a major professional ice hockey league of 30 franchised member clubs, of which 7 are currently located in Canada and 23 in the United States...

 telecasts on the Fox television network

Fox Broadcasting Company

Fox Broadcasting Company, commonly referred to as Fox Network or simply Fox , is an American commercial broadcasting television network owned by Fox Entertainment Group, part of Rupert Murdoch's News Corporation. Launched on October 9, 1986, Fox was the highest-rated broadcast network in the...

. Primarily, it was used to visually highlight the puck on-screen and display a trail when the puck was moving rapidly.

In 1994, Fox won a contract to broadcast NHL games in the United States

United States

The United States of America is a federal constitutional republic comprising fifty states and a federal district...

. A common complaint among American fans was that the puck was difficult to follow on the ice.