Passengers check in at Cat Bi international airport, Hai Phong city. (Photo: VNA)

The CAAV required agencies and units to apply the use of level-2 VNeID accounts for passengers boarding domestic flights.

For Vietnamese people,  VNeID is equivalent to a citizen's identity card, while for foreigners, it is equivalent to a passport or international travel document.

Earlier, the use of the app was piloted at 22 airports nationwide from June to August. It proved effective in helping many individuals who lost or forgot their personal documents.