At the URL http://www.playonline.com/ff11us/index.shtml on the left column is an image link directing to http://account.square-enix.com/manual/en/about.html
The image features a security token next to what appears to be an 'FFXI 5th Anniversary' keychain fob.
If possible, I'd like to recommend the image be updated with something a little more recent - if there's a 10th anniversary keychain, that would be perfect, or maybe something more like this.