Computer software and hardware restricting access on a computer, on a local computer network, or on the global computer network to specific users; computer software and hardware personalizing information coming from a computer, a local computer network, or the global computer network for specific users; computer software and hardware allowing easier or quicker access to information located on a computer, a local computer network, or the global computer network for specific users; computer software and hardware used to encrypt files for specific users; computer software and hardware allowing exchange of information between selected users on a computer, a local computer network, or the global computer network; computer software and hardware used to identify hardware and software users without the use of passwords; computer software for use in the field of computer software and hardware protection and security used to develop, write, edit or restrict the use of other computer software; computer hardware for use in the field of computer software protection; magnetically encoded cards and computer software for use as operating systems in smart cards and smart card readers; smart card readers, computer keyboards which include smart card readers, computer hardware with internal smart card readers; all the foregoing computer software and hardware are for security purposes