SCREENLOCK(8)SCREENLOCK(8)NAMEscreenlock - disable access to a terminal
Screenlock grabs the screen, keyboard, and mouse devices to disable
access to the Plan 9 terminal on which it is run. The screen can be
unlocked by typing the invoking user's Plan 9 password and a newline.
the image displayed while the terminal is locked
Use of this program on communal terminals is anti-social.