Which revolutionary marketing campaign first used the technique of 'unboxing' to create anticipation for a technological product launch?

Test your knowledge about revolutionary marketing campaigns that transformed how inventions and discoveries were introduced to the public. Throughout history, innovative marketing strategies have played a crucial role in the success of groundbreaking products, turning scientific achievements into household names. See if you can identify the pioneering campaign that changed how we perceive technological advancements.

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Apple's 2007 iPhone launch, where Steve Jobs dramatically revealed the device from a simple black envelope
Sony's 1979 Walkman campaign featuring celebrities opening sealed packages to reveal the portable music player
IBM's 1981 Personal Computer reveal, which showed executives opening briefcases containing the new desktop computers
Nintendo's 1996 Nintendo 64 promotion where gaming magazines included sealed boxes for readers to open on launch day