Its a stereovision thing that, when using special glasses, creates the effect of true 3D on the screen. Unlike its much more expensive 3D visors like the Revelator glasses, this system works by putting extra colours on your normal monitor and using standard 3D glasses with red/blue filters to create the effect. Very much like watching films such as Jaws 3 in 3D or any of thoses weird 3D magazine covers that were popular in the mid-80s.