What is JotForm?
JotForm is a free online form builder which helps you create online forms without writing a single line of code. No sign-up required.
At JotForm, we want to make sure that you’re getting the online form builder help that you need. Our friendly customer support team is available 24/7.
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.
There are 2 ways on how you can do this:
Method 1: You can easily enable the Auto Fill feature of the form by following this guide: http://www.jotform.com/help/227-How-to-Enable-Auto-Fill-Feature. The data is saved in your local browser, this means if multiple users are using the same computer and browser, the previous session might automatically prepopulate the form fields of the current session.
Method 2: You can use session IDs to save the current progress on the form, but you need to make the form multipage. You can follow this guide: http://www.jotform.com/help/97-How-to-Save-Forms-to-Continue-Later?. The good thing about using session IDs is that your users can easily continue filling out the form on any computer, anywhere as long as they have the session link.
I personally prefer method 2 in your case. Let us know if that helps.