1. Optical multi-touch 2. Touch by finger, normal pen and other object 3. Support Linux, Mac OS, WinXP, Win7, ... with the advanced optical imaging technology in interactive filed, which use 2 CCD lens that locate on the top-left and top-right of ... : FR4 fiberglass printed circuit boards, tempered glass, etc. PC connection5m USB cableTouch technologyOptical imaging (no special surface coatings)Touch ...