Creating invoices that include signatures on the receipts for the patients

Situation
We would like to include signatures on invoice receipts

OpenEMR Version
I’m using OpenEMR version 4.1.1

Browser:
I’m using: Google Chrome

Operating System
I’m using: Windows 8.1

Logs
Did you check the logs? Was there anything pertinent in them? Paste them here (surround with three backticks (```) for readability

Have you been able to accomplish this?

No we haven’t been able to do this but would like to start if it is possible. We just don’t know how to accomplish this.

Can you post a screenshot of where the signature will be going?

At the bottom right of the page.