An Overview of Optical-Touch Technologies

摘要

Recent breakthroughs have led to a resurgence in optical touch systems, which were first introduced in the 1970s. Developers have been able to address issues of cost, performance in high-ambient light, and form factor, to name just a few. This article details how these problems have been overcome and what the future holds for this technology, including a look at several completely new approaches to optical-touch systems.