Moj EU DZS is the official application of the Republic of Serbia for the safekeeping of COVID-19 test results, vaccination, and recovery certificates that are EU compatible. This application allows users to scan QR codes of their family members and decide when and to whom to show their data. No prior registration is required to use this app.

The app allows users to scan and store certificates of testing, vaccination, and recovery on their phones. The QR code on the certificates contains only the necessary information about the validity of the test, vaccination, and recovery from COVID-19. Users can download certificates via the eGovernment portal and activate the Moj EU DZS app to add their certificates. Once the camera on the phone or tablet device is activated, users need to scan the QR code on the certificate and press "Accept" to save it on their device.

All data that users scan is stored exclusively on their local device. The QR code contains only a minimal set of data defined by the European Union, such as the certificate status, name, and date of birth. The QR code is protected by an electronic signature and cannot be falsified.