The hidden mode feature allows you to run the application in the background totally invisible to other users.
Click on the image for help on individual items...
To activate hidden mode you first must enter a 'Re-Activation Phrase'. This can be anything you wish but be careful not to make it a phrase that is generic or can easily be typed unsuspectingly by other users, for example do not make it your pets name because your child can be in a chat room telling the whole room about their pet rabbit and then as soon as they type in the name....whoosh. up pops the Watch dog.
To show the software again simply type in your 'Re-Activation Phrase' anywhere on your desktop, it does not have to be in Notepad or any other application. It works on the keystrokes.
Basically this means that if the computer is shut down whilst the software is in hidden mode then it will still be in hidden mode when the computer is started up again.