A selective input system and associated method is provided which tracks the motion of a pointing device over a region or area. The pointing device can be a touchpad, a mouse, a pen, or any device capable of providing two or three-dimensional location. The region or area is preferably augmented with a...http://www.google.co.uk/patents/US7750891?utm_source=gb-gplus-sharePatent US7750891 - Selective input system based on tracking of motion parameters of an input device
