The challenges of multi-touch gesture interfaces

摘要

With a multi-touch projected capacitive touch panel, the user interface of an embedded application can be enhanced with gestures such as pinch, zoom, and rotate. True multi-touch panels, that is, panels that return actual coordinates for each individual touch, can support even more advanced features like multiple-person collaboration and gestures made of a combination of touches (for example, one finger touching while another swipes). The different combinations of gestures are limited only by the designer's imagination and the amount of code space. As multitouch projected capacitive touch panels continue to replace single-touch resistive touch panels in embedded systems, designers of those systems must develop expertise on how to interface to these new panels and how to use multi-touch features to enhance applications.