your requesting Internet-enabled device the date and time of your access to the website the website / application from which the access was made (referrer URL) the browser type and version you are using [...] other publications. These QR codes enable us to track access. No personal data is collected or stored in the process. The tracking of QR code accesses is anonymous and serves exclusively to analyze and improve [...] address and the names of the pages you opened, your browser and operating system, time and date of access, search engines used or names of downloaded files). If you request our services, usually only the