This is an L-shaped superimposing device often seen on TV. I have confirmed that it works by inputting actual video. I haven't been able to confirm its functionality with software integration, as I couldn't master it. Also, I haven't confirmed the controller as I don't know how to connect it. The details are written in the manual, so please take a look if you know how to use it. This is a set including the main unit, controller, and manual.