SlideBoom offers you a new option that limits an access to your presentation.
All you need to do is to share a secret link with potential viewers of your creation.
To generate this link check “Give me a secret url” and press “Save” button in editing window:

Copy the url code and send it out to whoever you want to show you presentation to. It’s that easy!

Important! Make sure “I want my presentation to be available to anyone online” option is not ticked in the same editing window. It disables a secret url code creating, and your presentation will be public.