1st Screen Lock is a desktop security software that allows you to lock your desktop with a password when booting or leaving your PC. It also has a spy utility that runs in the background, allowing you to monitor activity on your system.

One of the key features of 1st Screen Lock is its built-in spy utility that allows you to monitor all user activity discreetly. You can fix and log all user moves in the background, which is particularly useful when you need to know what your children or personnel are doing while you are away.
Each user of 1st Screen Lock has their own password, so you can rest assured that your PC is completely protected from unauthorized access. The password protection feature is designed to prevent users from seeing user statistics, changing options, or removing the program.
Overall, 1st Screen Lock is a great software that offers robust desktop security features. If you want to ensure that your PC is well-protected, this tool is definitely worth checking out.
Version 10.0: Major bug fix
Version 9.63: New Windows 7 tweaks added.
Version 9.51: Major bug fix.
Version 9.5: Major bug fix.
Version 9.41: 64 bit compatibility fix.
Version 9.4: 64 bit compatibility fix.
Version 9.32: This is a major big fix.
Version 9.31: This is a major big fix.
Version 9.3: This is a major big fix.
Version 9.2: Now the executable is digitally signed. Some bugs are fixed.