but for a hacker project it works and it is a clever use of pins. We love crazy ideas about saving pins. Once you have an Etch-a-Sketch mouse on your desk, you might as well build a clock to go ...
In order to use the gestures, all one needs to do is click and hold down the right mouse button and draw the gesture. In case you want to cancel a mouse gesture you can do so with a left mouse click.