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.
That can be accomplished by using our Unique Question function in the Form Limits settings. That will prevent the person from submit the form if the entry of a specific field is the same of a previous submission. Please follow these steps to enable it.
1. Go to Setup & Embed tab.
2. Select Preferences.
3. Click on Form Limits tab.
4. In the Unique Question option choose the field you wish to accept unique entry.