captage à distorsion de champ

CONT: Touch Pads allow for mouse movement simply by dragging a finger tip across a surface. Beneath this surface are grid-like array of sensors, which detect the skin of a person. Touch Pads use a technology called field distortion sensing, a form of capacitance-sensing technology. When you touch the surface, your fingertip distorts the electrical field at that spot. Tapping on the pad or buttons provide the same function as a mouse click - icon selection.