Borussia Dortmund introduce 'Fan Mode' in official club app to reward supporters who stay off their phones during home matches
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发生了什么
German heavyweights Borussia Dortmund have teamed up with main sponsor Vodafone to launch a digital initiative encouraging match-going supporters to keep their mobile phones in their pockets at Signal Iduna Park. Fans who refrain from checking their screens while the ball is in play will collect points to win exclusive BVB prizes.
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