I have multiple steps form (8 pages) and I want to save some hassle for a user if he wants to complete form later he can just save his current session in his cookies (or localStorage) and will be able to come back and finish form later. How do I approach this problem? Is it possible to save file uploads he already did (if not, how do I remind him that)? Is it possible also to save information from custom fields?
P.S. By no means I am not going to store information in our server until he submits form, until that I want to store all his info (with his consent) in his device