After performing a PCR or rapid test at one of Probatix’s supported Corona testing centers, users either receive their test result in an encrypted email or scan the result directly using the Luca app. When the results are sent by email, there is a link that can be used to transfer the results directly into the Luca App. If the test result is available via a printout or on a desktop, the QR code can be scanned with the Luca App, thus saving the data in the app. In this way, the test results can be transferred securely and easily. Each QR code and link can only be used once and prevents misuse of test certificates. The negative PCR test results are displayed in the Luca App for 48 hours and the rapid tests for 24 hours. The negative test results thus serve as proof for the users, if required by law.