Which famous inventor/designer first introduced the touchscreen interface to mainstream consumer products, launching the modern era of touch-based digital interaction?

Throughout history, certain product design innovations have fundamentally transformed entire industries and consumer experiences. These breakthroughs didn't just improve existing products but redefined our relationship with technology. This trivia challenge explores one such pivotal moment in product design history that changed how millions of people interact with their devices daily. Test your knowledge of this revolutionary design decision that influenced countless products that followed.

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Jony Ive with the original iPod click wheel (2001)
Steve Jobs with the first iPhone (2007)
Bill Gates with Microsoft Surface tabletop (2001)
Jeff Han with his TED demonstration of multi-touch technology (2006)