Chapter 7: Designing For Touch
By Josh Clark
Touch changes everything. Fingers and thumbs turn desktop conventions on their head, with touchscreens up-ending whole swaths of settled interface practice. Done right, touch interfaces create the sensation of interacting directly with information, of nudging and manipulating data as if it had actual physical properties. This trick of the eye and mind demands new methods: interface metaphors shift; content itself becomes the interactive control; traditional buttons, menus and tabs become secondary; and the familiar physics of the everyday world intervene.
All of this means that the best touch interfaces look and behave differently from those driven by mouse and keyboard. Dennis Kardys wrote earlier that ...