Unique password is useful under these circumstances:
1. Conducting anonymous survey but want to know who hasn't taken the survey yet.
2. Make sure each respondent can only take survey once.
3. Employee or students use their ID to enter survey to keep it private.
You can use SurveyPie to generate total random passwords or to set up custom passwords for all assigned respondents.
To set up custom passwords, we recommend you to use information identifiable such as mobile numbers, names, employee IDs and student IDs.