Have recipient upload document back

Hello Adobe World -

So in short, here is what I am trying to do:

When I send you an I-9, yes you will need to sign it (Adobe sign does this) but the feature I am trying to get done, is after you sign the form, you can upload a document (photo, PDF, Doc, etc etc) and send it back to me. So in other words, I just offered you a job then send you the I-9 to fill out. in the I-9, it asks for Drivers Licenses and Social Security card, After you sign and fill out the Adobe Sign form, I would like an option for you to upload the two forms of ID back to me.

This was the best way I could describe what we are trying to do haha - thanks for the help and let me know if you have any questions. If Sign can not do this, please let me know if Adobe can do this with any other platform.

Thanks

Marc S