title: Single Sign On on multiple domains
body: <p>We have two websites with different domain names. One of them is a wordpress site. Both websites have their own authentication system.</p>
  
  <p>For the sake of convenience, it was decided to have a single authentication for both website and making use of session cookies. I searched about it and got to know about Single Sign On. Can anybody tell me how to implement SSO when one of the website is a wordpress site(if this makes any difference)? I would highly appreciate if any help comes.</p>