Dang cat still sending emails to your ex? Deleting your files? On ur keyboard eating ur patience? If you're a nodding PC-user (sorry Mac people), it may be time for you to buckle down and invest in PawSense, a software utility that protects your computer from cats and trains them to stay the hell away. The program monitors keyboard activity and recognizes cat-typing after one or two paw steps. If paw steps are recognized, PawSense triggers a sound that irritates cats so that over time, the furball will know better than to practice its words per minute on your machine.