It can be useful to create private-access pages or events to give stakeholders a preview of content before it is published.
This technique, which requires the Post Password Plugin, allows you to create a secret URL for a page, so that only people you send the link to will be able to see the protected content. They will not need to enter the password to see the page as long as they have the secure link.

Go to Pages >> Add New. 

Set a Password for the page in the "Publish" metabox.  This should be a difficult to guess password. 

Hit Publish. 

Copy the secret URL in the “Post Password Token” box. You can copy this secret link and use it, say, in an email, portal, or in a secret redirect so that only the people you want to have access to the page can get in. These users *do not* need to know the page password if they use this secret link.

NOTE: Not seeing the Post Password Token box? You may not have the plugin installed. Contact and we'll get that set up for you.

Password Protected pages are automatically hidden from search engines.  As of Groundplan Theme 1.3.3, Password protected events are also hidden from public calendars.