i3lock is a fantastic lockscreen for tiling window managers.
If you are using a tiling window manager within a public space you need to add a lockscreen. I have one machine that I take with me to a public space. Its secure enough that I can leave it, but not secure enough that I want to leave it unlocked. So when I need to leave it behind for the restroom I need to lock it up.
paru -S i3lock # or apt install i3lock
Now that you have i3lock installed lets lock that screen.
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