Wonderful Things of Amusement

Yes this is real software!

Chris Niswander (Tucson, Arizona) invented PawSense. When cats walk or climb on your keyboard, they can enter random commands and data, damage your files, and even crash your computer. This can happen whether you are near the computer or have suddenly been called away from it. PawSense is a software utility that helps protect your computer from cats. It quickly detects and blocks cat typing, and also helps train your cat to stay off the computer keyboard.

I could definitely use this but not so much for my cat but for my pet rats. They are constantly walking across my keyboard and they've messed things up a few times.