security program requests username and password or simple password upon boot-up and locks desktop by one mouse click. it can't be bypassed on windows 95/98/me. all unwanted people are kept out to your pc. very flexible use: multi-user support(up to 450 users), password encryption, integration with your favorite screensaver, color's highlight log files with integrity test, setup of colored text for requesting passwords, possibility use access denied usernames as windows logon names and other pleasant additions including hidden measures that can stop hackers/crackers. screen guard sub-system can save message events from anyone, even unauthorized persons but still protect desktop. users can change their passwords only if during installation you enable this feature.