Ian Winter

There's a few ways you can screen lock a mac but I wanted to not just lock the screen also put a message in the login window.

Using ScreenLock from handymacapps.com and Quiksilver you can quickly launch the lock and then by running the following you can neatly add a message to the login window.

sudo defaults write /Library/Preferences/com.apple.loginwindow LoginwindowText "If you need me, call me."

Just do "" to blank it again or ditch the file.

Easy!