Locking a Computer Screen

Apple Remote Desktop can lock a computer screen. When you lock a computer screen, no one can see the desktop or use the mouse and keyboard on that computer. By default, Apple Remote Desktop displays a picture of a padlock on locked screens, but you can display a custom picture. See Displaying a Custom Picture on a Locked Screen for more information.

You can continue to work with computers using Remote Desktop after you've locked their screens.

Select a computer list in the Remote Desktop window.
Select one or more computers in the selected computer list.
Choose Interact > Lock Screen.
Enter a message to be displayed on the locked screen, if desired.
Click Lock Screen.
The client screen goes black, except for the administrator's name, the default picture, and any message text.