Require Signature When Registering

[tmod]

I would like to know if it is possible to modify the regsitration page to require a signature before the applicant will be approved for membership?

For instance when you register and do not fill out the image verification it will kick you back and not approve your registration.

I would like something along those lines for the Signature.

Is there a way to add this to the mandatory profile items when you register?

TIA

Tmod