How to allow only 1 submission per person without blocking people per IP address

Hi,

I have an issue with one of my forms, "SKODA Sales fighters : Enquête de satisfaction."

Our respondents are made up of salesmen and are often 2/3 per shop. This means that they usually submit the form through the same computer as their colleagues.

Do you have a solution to allow only 1 submission per person (rather than via an IP address) ?

Another issue we have is that we'd like for our respondents to have their access to the form blocked once they have already submitted an answer. At the moment, once they have submitted their form once, they can go back on the form, answer the questions and only at the end, once they hit "submit" do they receive the error message saying that they have already answered the form. They find this confusing, do you have a solution ?

Thanks for your help !

Regards.

You can limit your submissions based on a unique answer that your users are providing - such as allowing an email address to be submitted only once. Please see the following guide for more details:

https://www.jotform.com/help/223-How-to-set-Form-Limits-Based-on-a-Unique-Question

The Unique Question and any other checks for duplicate submissions happens only after your user hits the Submit button. The form does not "leak" your private information from the existing submissions, so the only way for the form to be aware whether the submission is a duplicate / not allowed is when the user actually tries to submit it to our servers.

Our servers will perform the check and redirect user to an error screen if their submission is not allowed due to one of the limits.

Please try the Unique Question form limit, and let us know whether it works to your satisfaction.