Is it possible to allow users to continue filling our the form on a later date?

I am using the forms to register users, but my registration form is very long.  I would like them to be able to come back and update their form.  It is essentially like a user profile.  Google is always saying things like your profile is only 50% complete, please update it.  My forms are kind of like personal profiles.  I would like users to be able to come back and edit / update their profile, but it is important that it is secure (i.e. that they can only see their record).  Is this possible and if so, how do I do it?

So far I am just emailing the link to the form I want completed, but I eventually will embed them on my website.

Thanks,

Yes, this is indeed possible, there're two methods to achieve it, the first one will store the info entered in the web browser storage and will be accessible as long as the form is always opened in the same browser or the browser data is not cleared. 

Here's the guide where you will get more info about it: 

https://www.jotform.com/help/227-How-to-Enable-Auto-Fill-on-Forms 

The second option is using a session variable which will allow the user, with a custom link, to access its previously filled info, even when it has not been submitted, and continue filling our the form. 

This method requires two forms and here's the guide to implement it: https://www.jotform.com/help/97-How-to-Save-Forms-and-Continue-Later 

If you plan to embed your form then you could follow the workaround described here: https://www.jotform.com/answers/978175#990593  

Regarding to show the percentage completed of the form, you could use our progress bar widget: https://widgets.jotform.com/widget/progress_bar 

If you have any question, let us know.