If you wear glasses or would simply like to keep your monitor contents private. A new modification has been demonstrated by Instructables modder Dimovi, that shows you how to remove the polarising film on your monitor.
Then transform a pair of glasses using the monitor film to allow you to see it again when you wear the specially modified glasses. Watch the video after the jump to see the neat modification in action.
The PlayStation 3D monitor works in a similar fashion to allow individual players to see just their half of a two-player game. If you fancy giving the modification a go on one of your old monitors, full instructions are available over on the Instructables website.