A vaccination passport is a document that verifies an individual's vaccination status, particularly against diseases like COVID-19. It serves as proof that a person has received the necessary vaccines, allowing them to travel or access certain venues that require vaccination for entry. These passports can be physical cards or digital certificates, often containing a QR code for easy verification. Many countries and organizations use vaccination passports to help ensure public safety and reduce the spread of infectious diseases, making it easier for people to participate in activities and travel internationally.