Which groundbreaking product design innovation did Corning develop in 2007 that would eventually become essential for smartphones and tablets?

Test your knowledge about one of the most significant product design innovations that revolutionized how we interact with technology. This invention challenged traditional interfaces and created an entirely new product category. While now commonplace, it was initially met with skepticism from industry experts who questioned its practicality and user adoption potential. The innovation went on to fundamentally change multiple industries and how consumers interact with digital devices.

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Gorilla Glass (chemically strengthened glass that could withstand scratches and drops)
Haptic Touch (vibration-based tactile feedback system)
PixelSense (early touchscreen technology using cameras behind the display)
LiquidMetal (amorphous metal alloy for device casings)