Autofill subscriber data in Webinar registration form

Hello,

I would like to integrate webinar registration on our membership-based website.  I would like to autofill the user data from their registered account in the webinar registration so that we can match the users exactly (to prevent they sign up with different email address for example or their name written differently than in our system).

Is there any way to do this?  For example by attaching URL parameters to the webinar registration.

Many thanks!