Buxton discovered multi touch computing. He developed a multi-touch tablet that used capacitance rather than bulky camera-based optical sensing systems. It means touching the screen with one or more fingers.The first multi-touch computing display was introduced in 1984, but it took 23 years for the first high-profile multi touch product, the iPhone to reach the market in 2007. And it took a few more years, with the introduction of Android in 2008 and the iPad in 2010, for multi-touch computing to become a standard for mobile computing.

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