I have a list of people who are allowed to respond to a survey. The respondents each have a unique ID and will receive an anonymous link to the survey. I would like to check their unique ID against my list and prevent them from completing the survey if it does not match. I have tried authentication against a contact list, but they need to be able to respond multiple times. I have also tried validation, but I can’t get the custom validation to compare their entered ID against an embedded list. What would be the best way to accomplish this?
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Ideally we need to use Authenticator in such scenario. But you can also use ‘contains’ operator in the custom validation on text entry question, with all id as comma separated in the validation text box.
Thanks for the quick answer! I read in the authenticator text that there also is an option to allow a respondent to take the survey multiple times. I was confused about the description when I was testing things, but now I will use the authenticator!
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