Which product design innovation, introduced in 2007, revolutionized user interfaces by eliminating physical keyboards in favor of multi-touch technology that recognized multiple finger inputs simultaneously?

Product design isn't just about aesthetics—it's about solving problems in revolutionary ways. Some products have fundamentally transformed how we interact with technology, becoming so influential that their design principles have been adopted across entire industries. This poll tests your knowledge about a pivotal design innovation that reshaped consumer technology and influenced countless products that followed.

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The original iPhone
Microsoft Surface Table (later renamed PixelSense)
Palm Pilot with Graffiti technology
Nintendo DS dual touchscreen