Some countries' immigration and health authorities require passengers to leave a health and travel history record. In those cases, IATA suggests the use of a card based on the Passenger Locator form and providing an additional section, the Health Declaration Card.

Advice to travelers

Most states have their own online passenger locator form. If travel requirements for your destination demand filling such form, the form is usually provided on the government website to be filled online, particularly for travel during the COVID-19 pandemic. 

Suggested passenger locator form to be used by governments

WHO, ICAO and IATA advocate the use of this standard Passenger Locator form: