1st Screen Lock is a password-protected desktop security utility that lets you lock your desktop with a password on boot, or at the time you are leaving your PC. Use the built-in spy utility that works in background and enables you to spy on your PC users by fixing all user moves in a log file. It is very useful, when you need to know what your children or personnel do at the time you are away. Each user of the program has its own password used to unlock PC, password protection does not allow your users to see statistics, change options, or remove the program itself, they can only unlock PC using their own passwords.