Control access to public computers over a network. Consists of two programs. The APT Master program is installed on a single computer and generates one time use passwords to allow access to a computer on the same network that is running the APT Client program. APT Client presents a full screen logon dialog that requires this password before the desktop is presented. After a specific period of time the logon dialog reappears requiring a new password. One Master can control multiple clients on the same network. Functions on the Master provide for increasing client session times, logging off sessions, terminating the APT Client program, etc. Session and user information are logged.