D'Viajeros means Advance Information of Travelers. It is one online form that collects immigration, health and customs data before arrival. The data goes to the immigration directorate (DIIE), the General Customs of the Republic and the Ministry of Public Health. The form has been online since November 2021, and its legal basis is Resolution No. 320 of the Minister of Transport, published in January 2023.
When the form is completed, the portal produces a PDF with a QR code that must be kept and presented to the authorities on arrival in Cuba. It also issues a private code that is used to edit the form later.
The QR code is required when passing the health and customs authorities, and immigration checks the form by passport number. Official sources are not consistent on whether airlines check it. The foreign ministry's 2023 announcement says the QR code must be shown to the airline, in digital or printed form, so keep it ready at check-in.