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If a grooved World Cup ball can upset some of the game's best players, how would they react to a ball packed with cameras, lights and a GPS chip?
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A team of Mexico City-based designers are trying to revolutionize soccer with a ball that could beam out TV replays and light up in bright colors when it crosses the goal line to clear up anyrefereeing gaffes, like the one that cost England a goal on Sunday in its 4-1 World Cup loss to Germany.
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"What we wanted to do with this ball is to demonstrate how a product that historically has not changed can be innovated and taken in a completely new, completely different direction," said Alberto Villarreal, a industrial designer who is leading the project in a country where soccer is a national obsession.
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This year's World Cup ball, the Jabulani, has been criticized for seemingly weightless shots sailing over crossbars, wobbly trajectory and goalkeeper blunders.
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Brazil goalkeeper Julio Cesar has likened the Jabulani to a cheap supermarket ball and Argentina star Lionel Messi has said playing with the ball was "very complicated."
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The seamless, groove-covered Jabulani, whose name means "to celebrate" in Zulu, was billed as the most accurate ball yet when it was unveiled by the game's governing body FIFA.
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"Innovations in balls in recent years have been superficial, nothing more," said Villarreal, 33, from the project's studio office in Mexico City. "But how a ball can influence different game conditions hasn't been considered."
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At their office, a team of five young designers pore over screens working out the hitches of jamming cameras, a power source, chips and sensors into a 450-gram (1-pound) ball.
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Challenges facing the project include creating software to stabilize images captured from multiple cameras in a rapidly spinning ball.
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Designers have yet to decide on a synthetic outer material that will behave like a traditional ball but protect its delicate interior from heavy kicks and impacts from posts and crossbars. The ball will not be inflated.
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Villarreal has kept the research and development costs under wraps and plans to be able to sell the design to a major ball maker in two years.
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But getting a blessing from FIFA will be difficult even if the ball eventually behaves like a traditional ball.
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"FIFA has always been a bit opposed to the entrance of technology in football while it's happening in other sports," said Villarreal.
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Mexico City-based ball maker Voit, whose balls are used in professional Mexican soccer, is optimistic it will become a viable product and could be interested in manufacturing it.
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"For this ball to be approved by FIFA it must meet certain characteristics," said Carla Colombo, Voit's marketing director.
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"Maybe it won't pass the tests but it could perfectly be part of a national or international line of balls."
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