com ). 20. Use of QR codes We use dynamic QR codes generated by the QR Code Generator from qr1.at on our websites, screens, flyers, brochures, and other publications. These QR codes enable us to track access [...] tracking of QR code accesses is anonymous and serves exclusively to analyze and improve the use of QR codes. Further information can be found at https://qr1.at/dsgvo . 21. Participation in contests We take