Image Number 6 for United States Patent #8103246.
Systems for methods for remote user authentication by using a cellular phone and an authentication system that generates and uses transient pass codes. The Authentication system is used to store a user's existing passwords; alternatively, the authentication system creates on demand a transient random pass code that is good for a limited duration. The transient pass codes may also be used in the packets that enable each packet to be individually authenticated in the firewall. When the user has forgotten the password in a traditional system, alternatively, without the need to create or remember passwords, user can use transient pass codes. The user retrieves the password or the pass code via a cell telephone call to the authentication system, before logging on to the system.