Abstract: A computer storage medium (CSM) includes identification information such as name, ID number, picture, and other routine identification information. Data stored on the CSM can include security data, encryption data, programs, and network logon executables. A secure computer network is accessed by inserting the CSM into a computer. The computer can automatically run an executable resident on the CSM or it can be manually triggered by the user. The executable prompts the user for a password. The CSM contains a user ID that was encoded when it was issued to the user. The user inputs their password and the network authenticates the user ID/password combination granting or denying access to the network. The CSM can install a memory resident process that provides on-line encryption capability for data, and can be incorporated into a computer security system that includes a secure key distribution system. Digital signature capability can also be implemented.