How to pass contact_id and checksum into a second form

[Upperholme]

I'm moving from Drupal 7 to Wordpress and wondering how to achieve the following: In Drupal I can use a webform and webform_civicrm to create a contact record and then, on submission of the form, I can pass the contact id and checksum of the contact record that gets created on submission to a second form, in the URL, so that the second form is auto populated.

Can I do the same thing using CFC?

with Drupal the approach needs me to include hidden fields in the first form for contact_id and checksum, but I don't see any option to do this in CFC.

Any pointers most welcome.