A useful feature in creating and fielding a survey, programmers can enable cookies inside Design's Internet Options section, under the 'Other settings' tab:
In this window, you can elect to turn cookies on/off for the survey, and dictate the duration the cookies will remain active in the respondent's browser before being removed.
Implementing cookies into the survey will do two things.
- When used with open (StartSurvey) links, a respondent will be allowed to resume where they left off without needing a unique identifier.
- For the duration of the cookie, will prevent respondents from taking the survey multiple times under the same IP address.
Cookies are not a foolproof method to retain respondent browser information. If a respondent is using a VPN, or disables cookies in their browser, this feature will not function as intended. Survey programmers should also be acutely aware of GDPR and privacy practices before implementing this feature.