John Blackbourn

There is no built-in way for your visitors to “log out” of password protected posts once they’ve entered the password. Even logged in users cannot log out of password protected posts by logging out of their account. This plugin solves that problem by providing a link for your visitors to log out of password protected posts.
<h3>Setup</h3>
After installing the plugin, add the following code somewhere in your theme to display a link for logging out of password protected posts:
<pre><code><?php do_action( 'posts_logout_link' ); ?>
</code></pre>

Log Out Password Protected Posts

Provides a template tag for a link for visitors to log out of password protected posts.

prontotools

zkancs

Use a simple, single shortcode to allow your visitors to login or logout depending on their current status.
The shortcode outputs an a href link for you to add in the header, footer or anywhere else on your website.
Example Shortcode:
<pre><code>[login-logout text_to_login="Login" text_to_logout="Logout" class="custom-class" redirect="/shop/"]
</code></pre>
Available Parameters:
<ul>
<li>text_to_login – The text to prompt logged-out users to log in.</li>
<li>text_to_logout – The text to prompt logged-in users to log out.</li>
<li>class – Any optional custom classes to be added to the link.</li>
<li>redirect – An optional page to redirect to after logging in/out. If not included, users will redirect to whatever page they’re on when they click the link.</li>
<li>login_url – An optional parameter that user can change the URL login page</li>
</ul>

Login Logout Shortcode

A single shortcode you can place anywhere to allow visitors to login/logout.

Log Out Password Protected Posts vs Login Logout Shortcode