Control your computer using a laser or IR pen.

Step 2 Deciding what to use and how.

You can use either an IR pen or laser, but they require different setups of the webcam. If you are using a laser, you must put your webcam somewhere so it is pointed at the wall. If you are using an IR pen, your webcam has to be pointing towards you when you use it. If you use an IR pen, you also have to go into the webcam settings and make it so the image is mirrored horizontally. I am using a logitec quickcam for this project, but you can use others as well.