The FlipBook Creator offer free online hosting for all the users, allowing you to published Flash flip book to its online server for online reading and sharing. However for reasons, you don’t want to make your e-publication public to unauthorized people. To add password protection would be a great choice. Once your flipbook is uploaded, you are able to manage the flipbook password online. - See more at: http://www.flippagemaker.com/faq/is-it-possible-to-manage-the-flipbook-password-online.html