Brazil 2014 marks the first time goal-line technology is used at the 32-nation football jamboree.
Fourteen cameras – seven focused on each goalmouth – will be used in all 12 World Cup stadiums in Brazil. The cameras will record 500 images each second, and a computer will process the frames. Within a second of a ball crossing the line, the referee’s special watch will vibrate and flash “GOAL.”
The small German start-up company GoalControl created the technology, which has been used for years in sports such as cricket, rugby, tennis and American-style football.
Read more at VOA’s sports blog, The Sonny Side of Sports