We are pioneer in interactive projector technology. Camera-based position tracking, which has been our study focus, is the core of interactive projectors. Our technology has evolved from “USB camera + software” to “raw camera + hardware”, or “pure hardware”. The later has obvious advantages in stability, efficiency, smoothness, and wireless supporting. Benefitted from our advanced transformation algorithm, all our interactive projectors, including the ultra-short throw projectors, requires only 4 clicks for calibration. We use all-direction high-sensitive none-battery IR pens for all our interactive projectors. The wireless feature enables you to connect the interactive function to your notebook via a wireless dongle.