Preventing multiple responses to a survey is really important because letting people answer more than once can seriously ruin the data.  It skews results, making it seem like certain opinions are more popular than they are. This can lead to misleading insights and wasted time on analysis, as you will have to clean up the data. Plus, it unfairly represents the group’s views, drowning out other voices. If participants see flawed results, they may lose trust in the process, making them less likely to engage in future surveys.

So, it is vital to stop people from taking the same survey twice ! Zoho Survey comes handy in fixing this drain!

One response per URL: Once someone submits the survey using the link, they can’t submit again. This prevents anyone from using the link multiple times.

One response per email: Respondents can only submit the survey once with their email address. If they try to submit again using the same email, it won’t be allowed.

One response per IP address: If someone submits the survey from their home internet connection, they can’t submit again from that same IP address. This helps stop multiple responses from the same connection, but others can still respond.

One response per device: Each device can only submit the survey once. If a respondent has already filled it out on their phone or computer, they won’t be able to submit again from that device.

With these features, Zoho Survey helps ensure that your data is accurate and reliable, making your insights much more trustworthy!

Learn more here !
https://help.zoho.com/portal/en/kb/survey/launch/restrictions