How to implement SSO on Mac and IPAD
There's a tutorial on how to setup Kerberos for OS X here: http://computing.help.inf.ed.ac.uk/kerberos-mac-os-x. After that Safari should automatically work with the SSO, Firefox &amp; Chrome may need further settings configured.

For iOS devices I'm unsure, it appears that to do it it requires either the device is in an Enterprise group, or that you build it with the iOS Configurator application but it's not entirely clear on how it should be done.