Security system with imaging functionUS51310387 Nov 199014 Jul 1992Motorola, Inc.Portable authentification systemUS51809015 Apr 199119 Jan 1993Kabushiki Kaisha ToshibaIC card with individual authentication functionUS522417329 Oct 199129 Jun 1993Kuhns Roger JMethod of reducing fraud in connection with employment, public license applications, social security, food stamps, welfare or other government