FIFA, world soccer's governing body, is using goal-line technology for the first time in international competition during the Confederations Cup tournament currently taking place through end of the month in Brazil.

The move, allowing officials to review did-he-or-didn't-he shots on goal, comes to the relief of many soccer fans after a growing number of media and critics called for its implementation at the international level. Goal line technology will be used again at next summer's World Cup, also in Brazil.

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But just because it's finally here doesn't mean most futbol aficionados understand how goal line technology actually works.

Here's the quick rundown of how this slick system functions: A German company called GoalControl sets up 14 cameras around the rim of each stadium hosting matches. Seven focus on each goal, and cables connect each camera to a central mainframe computer. The seven cameras all track a shot on goal, sending precise data back to the compuer, which then triangulates the ball's position in relation to the goal line. If a ball crosses the goal line, a vibration and visual signal is then transmitted within fractions of a second to watches worn by referees on the field.

Most goals, of course, won't require such precise analysis, but the new technology will certainly eliminate situations like the controversy surrounding a disallowed goal by Frank Lampard of England against Germany in the 2010 World Cup. Further analysis showed the shot, which would have tied a match England went on to lose, should have counted. Here's a clip:

The infographic below, which comes by way of the Dell-supported blog Tech Page One, goes into further detail on FIFA's new goal line technology. Check it out (click the infographic to enlarge it); then let us know in the comments whether you think goal line tech should or shouldn't be used.

Photo by Ronald Martinez/Getty Images