mikejuk sent one in that sends absolute shivers up my spine. “I have a problem with sticky touch screens — whenever I try to clean the jam off I activate and use a lot of apps I never intended to. However it looks as if sticky is the way of the future. A prototype screen has been shown that varies the friction as you move your finger across it. The result is that you can ‘feel’ the buttons and notches on scroll bars. It sure beats having to build real buttons…”

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A Sticky Touch Screen Lets You Feel the Buttons