Here’s a look at the Pros and Cons of Optical Touch Technology… PROS: Pure glass touch surface is very durable; very good optical quality; good accuracy; can use finger, fingernail, stylus, gloves to operate; multi-touch functionality up to 6 points; Plug-and-Play compatible with Windows 7/8. CONS: Does not perform well in direct sunlight; susceptible to damage since components are on front surface; requires third-party paid driver to operate in Multi-Touch with MAC; limited Linux support.
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