Using Google Authenticator,
https://code.google.com/p/google-authenticator/, their 30 second TOTP to protect a page or post. Initial release gives you a menu in the Tools section of the admin area to setup new keys for use. Gives you a link that can be used as a QR Code img src link or you can browse to it and see the graphic there as well. By setting up the QR Code/Link in your Google Authenticator App you are then able to use that 30 second temporary password to protect a page or post. It uses session variables to make it so once you are logged in to that page you can browse away from it and still go back to the page after 30 seconds.
A Meta Box within the pages and posts area allow you to enable protection as well as the ability to check any number of keys that can access the page.
This section describes how to install the plugin and get it working.
e.g.
- Upload the directory to the
/wp-content/plugins/ directory
- Activate the plugin through the 'Plugins' menu in WordPress
- Go to the Setup and Settings page under Tools for
Google Authenticator for Pages and Posts