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Remember the time when we used numeric keypad on our mobile and had to press the same set of keys again and again to obtain the letter or number of our choice? Well, that does sound like a long time ago. Numeric keypads have mostly given way to smart touch screens and that has significantly revolutionized our content viewing or information gathering experience too. Today, with an easy swipe of the thumb, one can easily get access to any information round the world. In other words, the world is in your palm! Such display interfaces that allow inputs through pressure and gestures on multiple points on the surface is known as multi-touch displays. However, its application is not limited to smartphones and tablets alone. Laptops, computers, touchpads, mice, whiteboards etc make use of it too...