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In football broadcasts, tech shows each country a different ad on the same LED board. The board flickers ads faster than the eye can follow, and each country's camera syncs its shutter to catch only its frames. One board splits into up to four feeds.
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In 1996, Pepsi ran a joke advertisement offering a Harrier fighter jet for 7 million Pepsi Points. John Leonard exploited a catalog loophole to claim the jet for about $700,000, and when Pepsi refused, an actual lawsuit followed.
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