In BlockSurvey, you can easily restrict response submissions by IP address. Here's how you can do it:
1. Navigate to Settings -> Response Management in your survey.
2. Under the Restrict Submissions section, enable the “Restrict submissions to one per IP address” option.
Note: BlockSurvey hashes the respondent's IP address and stores only the hashed value. The respondent's actual IP address is never stored, ensuring privacy while preventing duplicates at the survey level.
By using this method, you restrict submissions based on the respondent's IP address, ensuring only one submission per IP.