Security and Easy in the same sentence?
This is still a work in progress, but I figured I'd publish it anyway for now so fellow Axcess readers can benefit now, rather than later. Feedback welcomed (as always)!
How to set up a subdomain to use with your Yubikey enabled OpenID:
Go to http://openid.yubico.com/server.php
Press your Yubikey
Create subdomain (ex. Openid.yourdomain.com)
Create index.html as the only document in the newly created subdomain
Copy the following code into the index.html file:
<html>
<head>
<link rel="openid.server" href="http://openid.yubico.com/server.php" />
<link rel="openid.delegate" href="http://openid.yubico.com/server.php/idpage?user=XXXXXXXXXXXX" />
</head>
</html>
(Replace the "XXXX" with your unique, 12 digit ID, found on Yubico's OpenID page)
Each site that uses OpenID has a different approach to associating your OpenID to your login, so that part you'll have to figure out for yourself, but this will get you started.
Have fun using your new, secure, login!