The ticket layout was created by our artwork department in close cooperation to every single city council to match their individual ticket vision. As soon as the layouts were developed, a hard proof was send to authorities to give a visual example how the ticket will look like. Layouts are revised until a final agreement is made. In this case, the tickets contained a special printed QR code on the backside of the tickets (related to individual websites of the cities). Therefore a special online QR code testing has been installed in the production procedure.