First 'here' link ...
Single Sign On (SSO) for cross-domain ASP.NET applications
Uhhh, certainly your Moodle is NOT an asp.net application.
The second link leads to:
http://miniorange.com/other_sol_page18
They have a page that list all the apps for which they have
plugins?
In the 'M's ... Moodle is NOT listed, but ... there is a moodlerooms listed!!!
http://miniorange.com/moodlerooms_single_signOn_solution
'spirit of sharing', Ken