I am giving a survey, but want to be able to link responses to later test scores. For privacy reasons, I can't just ask their name. Is it possible in Qualtrics to generate and provide random access codes to survey respondents? Codes that they can't take the survey without? I could generate my own codes and just give a text-entry question, but if a respondent enters the code wrong, I don't want them to be able to proceed.
Does that make sense? I will clarify if needed.