Why do you not want to answer this thread?(Your answer will be sent to Jeanette and Aytekin)
But want to know if jot form offers a signature option?
Yes. You can check the different signature widget available to JotForm here https://widgets.jotform.com/search/signature
Here is a demo form http://form.jotformpro.com/form/52071482370955? you can test the signature on it.
Let us know if you need further assistance.