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Limit participation with pass-in ID

Can you limit the unique pass-ins to only be used once?

(I am  passing in a variable "ID" and everyone has a unique ID, but
I only want them to be able to take the survey one time)
asked Jun 10 by anonymous

1 Answer

+1 vote
You can set the password instead of a pass-in variable and there you can limit how many times each password can be used.
answered Jun 10 by Jay Rutherford Gold (42,930 points)
In Lighthouse Studio, you'll need to go to the settings tab of the "Questionnaire Access and Passwords" area and check the box next to "Allow Respondents to Define their own Passwords" if you don't/can't pre-load your passwords into the program. And make sure the minimum characters is set to something appropriate.