So Germany (and other EU countries) have a digital vaccination certificate. You have to be fully jabbed to use the digital vaccination certificate (known in Germany as the Impfpass or Impfnachweis). It will also soon be possible to store negative test results and recovery from Covid certificates on the Covid health pass. The German Health Ministry confirmed to The Local that the digital certificate can be used for travel within the EU. In Germany, you may be able to access the digital pass if you take your foreign vaccination pass to a pharmacy and ask them to convert it for you.
Source: The Local June 29, 2021 15:00 UTC