# Lock the system
# lock with a picture:
#bindsym $mod+l exec i3lock -i ~/.config/i3/i3-lock-screen.png -p default|win -t
# lock by blurring the screen:
bindsym $mod+l exec ~/.config/i3/scripts/blur-lock
And then be locked out by PAM policy for another 10 minutes.
@reclusiveAlgorithm Your login password should work. Num Lock on the screen just mean that you have Num Lock enabled on your keyboard (same goes for Caps Lock).
Best to do is press backspace several times before you input the password. Talking from my own experience I usually have some missclick before I write the password - you should see “No Input” when it is good.