Hot Corners on Mac

Besides the Hot Key shortcuts, one of the most useful things I have learned about computing with a Mac is the ability to secure my machine at the drop of a hat (especially in the classroom). My method of choice is a hot corner. There is no "lock" in the hot corners, but there is a way to do it... Just make a Hot Corner start the screen saver, then require a password to wake from screen saver!

First open your System Prefs:

 

Then go to Expose/Spaces:

 

Now find Security & select the following check box:

Try it out... and, HEY, while you're in there... 

Set up your other corners with helpful features like I have done:

Well, let me know what you think... :)