Hello,
I'm trying to see if Qualtrics has the ability to prevent multiple submissions/responses based on the participant's IP Address. My organization is looking for specifically this, not using a browser cookie as this can be bypassed using an incognito window.
Right now, we have to go manually discard flagged responses. Instead, we would like participants to see a message that says something similar to, "You have already completed this survey."
Any help is greatly appreciated, thank you!