At -- in the video, we describe this "Today´s code for the test".

Candidates need Today´s code to take the test. 

On the front page, you have an overview of today´s tests. There you can see Today´s code.

Today´s code changes from day to day. Therefore it is important that you print Today´s code on the test-taking day. If you print today´s code two days before the test, it will not work on the test-taking day. The candidates write Today´s code after they have logged in with username and password.