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What is the function of the access code?

The randomly generated personal access code (PIN) that has been sent to you by post has two functions:

  1. It ensures that the questionnaire can be completed only by people who belong to the target group.
  2. During the survey period, you can use the same PIN to re-access the survey at any time and continue from where you left off as long as you have not completed the survey on a final basis.