Patent ID: 6442525
Filing Date: 2002-08-27
Classification: B41J,B82Y,G03B,G06F,G06K,G06Q,G06T,G07F,G09G,G11B,G11C,H01L,H04L,H04N,H05K,Y02D,Y10S

Abstract:
An authentication system for determining the validity of a removably attached unit to be authenticated comprising:a central system unit; first and second secure key holding physical objects electrically attached to said central system unit, wherein said second key holding physical object is further permanently physically attached to said removably attached unit; wherein said central system unit is adapted to interrogate either of said secure key holding physical objects so as to determine a first response and to utilize said first response to interrogate the other of said secure key holding physical objects to determine a second response, and to validate second response to determine whether said removably attached unit is physically attached to a valid key holding physical object.