Patent ID: 6501846
Filing Date: 2002-12-31
Classification: G06F,G06K

Abstract:
A device for controlling computer access comprising:a relief object image generator comprised of a single electrode electroluminescent device and an alternating electrical current source, said relief object image generator for generating an image of a relief object placed against said relief object image generator; a pressure-variable impedance coating over said relief object image generator, said pressure-variable impedance coating for insulating said relief object from said alternating current source and for generating increases in current to said relief object image generator in correspondence with pressure applied by said relief object to said pressure-variable coating; a sensor array for receiving said image and converting said image to electrical signals corresponding to said received image; a memory for storing image data corresponding to a relief object associated with an authorized user; and an image processor for generating image data corresponding to said electrical signals generated by said sensor array and for comparing said image data stored in said memory to said generated image data, said image processor generating an access granted signal in response to said stored image data corresponding to said generated image-data.