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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    Prevent duplicate registration

    Asked by SpacePoint on July 05, 2016 at 10:17 AM

    I see you can prevent duplicates based on IP address but I have clients that register multiple students from the same pc. How can I prevent them from enrolling the same person again? Is it possible from a calculated field (LastName, FirstName) or is there a better solution?

    prevent duplicate pc register solution same
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    Answered by victor on July 05, 2016 at 10:37 AM

    You can restrict the form so users can not submit the same answer twice on a specific field. If the enter the PREFERENCE wizard

    Under the ADVANCED tab, you will see the UNIQUE QUESTION option. Select the field which you wish to limit the form.

    Please let us know if this helps.