1.Principle: It uses advanced computer vision technology and body move tracking software to make interaction between participants and the computer. 2.Feature The projected picture will move by your every movement on it or above it, a dynamic and variable picture, so beautiful and attractive and the projecton area can be extended to any size. 3.Application widely used for advertising,bar decoration, hall decoration, entrance decoration,and some edutainment. 4.Components core control system, projector,computer, and some auxiliary lines 5.customization five effects are presented to you and you can change the background and the interactive picture to meet your need., also you can make many other interactive effect by the interface program provided by us. 6.Tenure life No limit