PDF Page Lock enables you to lock or hide selected pages from a PDF document, making them inaccessible to the reader. If you lock a page, it will still be shown as part of the document but the page will be blank and display a lock icon. Hidden pages on the other hand are not shown at all, so the reader will not be aware of the protected pages.
To lock or hide selected pages with PDF Page Lock, you need to specify a password that you can use to later unhide or unlock your content. The pages can only be unlocked with the PDF Page Lock software, other PDF readers will not allow you to undo the protection.