What kind of mouse should be

I recently told the child about the degrees of freedom, this is in physics, who knows, that is good. Any pendulums and levers, how many options there are to turn them in different ways.
PC mouse.
She actually has three degrees of freedom - you can move around the table and turn it around.
And only two are transferred to the computer! Only coordinates!
Imagine how it would be cool ... Turned the mouse - and in a computer toy the gun turns, such as where we shoot ... In three-dimensional labyrinths - in general expanse. Very comfortable in panoramic photos or GoogleEarth class programs, there are not enough two degrees of freedom of the mouse, you need a more advanced input tool.
If anyone thinks that the mouse can not be turned at a large angle - I will object. It cannot be moved to a long distance either, but there is no discomfort.
If anyone thinks that it is difficult to do - I will object. You can, of course, put a compass in the mouse - but not necessary. You can put a gyroscope - not necessary. You can put two devices "reading the table", then the difference in their movements to determine the rotation. But this is not necessary. Modern mice have something like a video camera, many times a second they read a picture of irregularities. The displacement of the image determines the movement of the mouse. In the gland in general, nothing needs to be changed - the refinement of the software will allow you to determine the turn.

If anyone thinks I’m wasting my tongue in vain and I need to patent such a thing, I agree.
I think all the mice of the future will determine the turn of the hand.
Goo