How to control your computer with a laser

Have you ever been annoyed because you have to get close to your computer when you use it? Have you ever wished for a wireless mouse, but never quite ended up buying one? Well here's a temporary solution for you!
This lets you control mouse motion (mouse clicks just added!) with an everyday $1 laser pointer from up to 20 feet away (and way, way further if you have a more powerful laser). To get started controlling your own PC with a laser, press play!