"It is the tactile sense that demands the greatest interplay of all the senses."
This chapter concerns the patterns that have emerged—some over the past 30 years—for using touchscreens and other touch-sensitive devices. Patterns are a combination of a gesture plus a system response that can be repeated in a variety of situations across many devices (although most, if not all, of these patterns require certain sensors to be in place). Patterns capture a structure of call and response. Where possible, context has been left out or relegated to the EXAMPLES section of each pattern.
See GESTURES FOR TOUCHSCREENS in this book's appendix for a description of the gestures used in these patterns.
Patterns for touchscreens can also, in many cases, be applied to free-form interactive gestures, just slightly modified. For instance, the Spin to Scroll pattern can be performed with a finger on a device, but it could also be performed in the air with a finger.
There are several ways to use patterns. The first is the simplest: just read through them and be aware that they exist. Internalize them so that they will appear organically as you design. The second way to use them is as a reference while designing: if you get stuck, a pattern may suggest a solution. The third way is to use them as Walt Disney did, to make a good idea even better, a concept he called plussing ...