Despite successful double vaccination it happens that you still have to wait in vain for your green vaccination card. The app is now recognized as a fully-fledged alternative to the green vaccination card. If you have problems with scanning, you can also enter the alphanumeric code displayed below the QR code into your cell phone. : COVID vaccination certificate). If you have been vaccinated, your vaccination data will now be displayed:Everything is actually quite simple if you know how to work through the individual steps.