Before you can use the interactive pens, you need to install easy interactive driver on the computer connected to the projector. the easy interactive driver software is available on the "epson projector software for easy interactive function" cd that came with the projector.. The easy interactive tools software is included on the cd labeled "epson projector software for easy interactive function." this cd also includes the easy interactive driver, which is required for brightlink pen usage on a mac.. Expect more from your projector. download the epson iprojection app from the chrome web store. before you set up the epson iprojection app, make sure that both your chromebook and epson projector are connected to the same network. easy interactive tools