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.


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    How can I avoid multiple submissons from the same person on a form?

    Asked by Sjur Ove  on April 01, 2015 at 06:50 AM

    When making survey i do not want many answers from the same user.  Can I aviod that?

    Is it possible to let IP-adresses follow the answer? 

    unique submission strict limit limit submissions unique question limit
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    JotForm Support

    Answered by KadeJM on April 01, 2015 at 11:08 AM

    Yes it's possible to restrict your users to only one submission.

    Please see this guide here http://www.jotform.com/help/64-How-to-Set-Unique-Submissions-on-a-Form and change your Unique Submissions to "Strict" which is IP-based to prevent that problem.

    Alternatively, you could even base it on a form field via a Unique Question as mentioned in this guide here http://www.jotform.com/help/223-How-to-set-Form-Limits-Based-on-a-Unique-Question.