Is there a way to add a digital signature to a form?

Is there a way to add a digital signature to a form? I need my clients to be able to fill out a form and then sign it for an official submission.

We have electronic signature features available in JotForm. Please check them here  https://widgets.jotform.com/search/signature

User guide: How-to-Add-a-Widget-to-your-Form

Related articles : 

https://www.jotform.com/blog/70-Announcing-E-Signatures-for-Forms

https://www.jotform.com/blog/148-Announcing-the-Adobe-Document-Cloud-eSign-Widget