How can I protect the forms with multiple passwords?

My service is a questionnaire and I need to provide a different password to each client, how can I do it?

We do not allow login forms of any kind, and your forms cannot be restricted with an actual password or login system.

However, what you can do as a workaround is to use conditional logic to show/hide fields of your form based on an answer your users provide on a field:

https://www.jotform.com/help/196-Hide-or-Show-Multiple-Fields-at-Once

With this in mind, you could use a simple Text Box or Text Area field to ask for an "access key", and show the remainder of your form to users when they enter a specific "access key" into that field.

Please let us know whether you need any further assistance, we'll be glad to help. Thank you.