HOORAY, YOU HAVE GESTURES! But, um, do your users know it? Gestures are useful only if people can find them. Otherwise, they’re Easter eggs, hidden treats for the lucky or determined—and most users are neither. The challenge, of course, is that gestures are invisible, unlike buttons with their labeled invitations to action. If the interface doesn’t clearly suggest a gesture, you must help people discover it. This chapter explores the subtle craft of making gestures seem intuitive, even when they aren’t intrinsically obvious. We’ll look for the essentials of self-explanatory UI in sources as varied as magazines, ancient manuscripts, and video ...
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