Description
Locks an X11 desktop and can show classic screen saver effects while the session is protected. It is useful on lightweight window managers or older X setups that do not provide their own reliable lock screen.
Use it when the screen locker is part of your trusted session workflow. A screen locker protects local access only while it is running correctly; it does not encrypt files, replace login security, or protect an unattended machine if the desktop environment bypasses it.