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JotForm is a free online form builder which helps you create online forms without writing a single line of code. No sign-up required.

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    create a (non duplicate user) registration form

    Asked by tpr on August 11, 2011 at 12:48 PM

    We would like to use our JotForm acc to create a (one time) per user registration form. Is it possible to stop someone from registering a second time by checking the IP address or email address used? We would like to stop duplication without having to hunt through a excl spreadsheet.

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    JotForm Support

    Answered by liyam on August 11, 2011 at 02:10 PM

    Hello tpr,

    You can make a unique submission per IP or per cookie based, but unfortunately not by per email address.

    To set your form to only receive unique submissions:

    1. Edit your form
    2. Click Preferences
    3. Go to Advanced Settings Tab
    4. Click on the right part of the table, beside Unique Submission to change settings value. 


    You have 3 different settings

    1. No Check - no restrictions
    2. Loose Check - Cookies dependent
    3. Strict Check - IP address dependent

    I hope this quick tutorial provides resolution to your issue at hand.

    If you have other questions or concerns, please do let us know.