do your forms offer digital signature?

would i be able to create a payment authorization form with a digital signature?

We do indeed allow for electronic signing of forms. 

http://widgets.jotform.com/search/signature

I would recommend Smooth Signature widget or E-Signature widget, but both would be helpful for your goal.

You can see here how to add widgets to your jotform: How to Add a Widget to your Form

If you need further verification,