Digitaler Impfpass
ImpfPassDE
GZIM mbH
CovPass
Robert Koch-Institut
ImpfPassCH
COVID Certificate
Federal Office of Public Health FOPH
COVID Certificate Check
impf.app
Grüner Pass
BRZ GmbH
GreenPass EU
Österreichisches Rotes Kreuz, Landesverband OÖ
NYS Wallet
NYS Office of Information Technology Services