JotForm is a free online form builder which helps you create online forms without writing a single line of code. No sign-up required.
We believe that if one user has a question, there could be more users who may have the same question. This is why many of our support forum threads are public and available to be searched and viewed. If you’d like help immediately, feel free to search for a similar question, or submit your question or concern.
You can use widgets to achieve this. There are a couple of signature widgets for you to choose from: http://widgets.jotform.com/search/signature
Related guide: How-to-Add-a-Widget-to-your-Form
If you're an existing DocuSign user, we also just recently released an integration with DocuSign
Related Article: Introducing-the-JotForm-DocuSign-Widget
In case you have a followup question whether these widgets are legally binding, I'll paste a snippet from an article when we first launched these widgets:
E-signatures are legally binding on almost all countries and states, but we still recommend consulting with your lawyer.
JotForm records the IP address and time of the signature made so that also provides additional confirmation about the signer of the document.
If you have a followup question about signatures, don't hesitate to reply to this thread.