1. A touchpad comprising an electrically insulating membrane (10), a first series of spaced apart wires (12) disposed on a first face of said membrane (10) and a second series of spaced apart wires (14) proximal to said membrane, there being no electrical contact between said first and second series of spaced apart wires (12, 14), each wire of said first and second series of spaced apart wires being sensitive to the proximity of a finger to modify the capacitance of the wire in proximity to the finger to detect the presence of the finger positioned in proximity to that wire each wire of said first and second series of wires having a diameter in the range of about 10 microns to about 25 microns.