... multi-touch 2. Touch by finger, normal pen and other object 3. Support Linux, Mac OS, WinXP, Win7, Win8 ... Support multi-touch by pen, finger, and other opaque object.Faster response and higher resolution 32768*32768Low cost ... Touch methodFinger, glove hand, pen, any other pointer or opaque object Stylus minimum diameters 6mm( for 40″ screen ... by finger, normal pen and other object (30inch -110inch size)