perceptive pixel's chief scientist demonstrated software and applications developed in house, which show how touch would work for web browsing and creating simple animations. >>longworth: to a certain extent the keyboard and mouse can be a barrier for some people to access computing. butthere are groups that having a touch interface removes that barrier that kind of fear factor to getinto the technology. >>reporter: but all of the leaping around in front of a touch screen seems overly energetic. could this technology really rival the keyboard and mouse for ease of use? >>longworth: touch isn't appropriate for everything and there are always going to be certain types of productivity applications, your emails, word processing, spreadsheets where you just want to be able to bang away with your mouse and keyboard because that really is the best way of doing it but for other sortsof applications for example if you are manipulating images, if your browsing the web or browsing images and video touch is going to be fantastic. >>reporter: how about a human machine interface that gives the user a