Password on initial program start

Anybody know of an addon or setting within PTB to prompt for a password before starting the program?

I know there a password protecton for profiles and the like but I fear leaving the flash drive around or loosing it completely and somebody finding it and without any problem logging in and send emails from my account.

So it might be nice to have an add on that when either the autorun or you double click on the icon it asks for a password before proceeding.

Thanks for any help/suggestions.

Mark Wright