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The same goes for touch screens and the latest technology has seen the emergence of surfaces that react to touch by sensing the infrared signature where your fingers are touching the surface; the result is a system that allows more than one person to manipulate images, video, 3D models and more. Although technology you already use may have multi-touch capabilities, such as the iPhone or iPad, for which you can buy iphone installs, the latest touch screens are even more reactive, containing over 1000 touch points per surface which produces a highly responsive and tactile system. These screens present even greater usability potential, allowing the user(s) to perform tasks that would not have been possible on single touch screens.