Touchscreens have made a difference. Until fairly recently, the assumption could normally be made that people would provide input to their machines using a keyboard or a mouse. But not now.
The people have spoken: we want touchscreens. Touchscreens more than justify the disruption they have caused. We need calm too, though, and that's still a work in progress. This posting reviews some recent developments on the software standardization front concerning "pointer events" and "touch events".
Touchscreen technology has actually been around since the 1960s. A great review of the history is available in Bill Buxton, "Multi-Touch Systems that . . . [more]