Hi
I'm not sure i understood your question :smileyhappy: You would like to validte the user account / or device account?
Clearpass guest module - enable the guest to self register is device / and is own account - after it being done - the clearpass guest module create a user record for that guest {or device - depands your auth process}.
and when the guest is logged in - clearpass captive / guest login page validate this account.
Me.