'Slide to unlock' on a door bolt serves a completely different purpose than slide to unlock on a touchscreen. They have nothing to do with each other, and the i

'Slide to unlock' on a door bolt serves a completely different purpose than slide to unlock on a touchscreen. They have nothing to do with each other, and the idea was novel. That's true whether or not you think software ideas deserve 20 year patent protection (I don't think they do)