EU Digital COVID Certificate

From July 1, the EU Digital Covid Certificate was launched in all 27 member states as well as Switzerland, Iceland, Norway and Liechtenstein. This document is an electronic certificate that is to facilitate the free travel of citizens of the European Union during a pandemic. Moreover, a single document guarantees that the results of tests or vaccination certificates will be recognized in every EU country.

https://www.gov.pl/web/certificate/about-certyficate