You can use Survey access control to restrict participation in your survey by:
- Setting up a survey password: only people who have the password can complete the survey. This basic protection does not prevent respondents from making multiple entries.
- Setting up a respondent list with unique credentials for each respondent. Respondents then access the survey either by entering a username and password, or by following a customised link. Each set of credentials can only be used once. You can store these credentials to monitor or track respondents, or discard them to keep your survey responses anonymous.