As the global economy recovers from the impacts of Covid-19, the sharing of reliable health information, particularly immunisation records, is becoming increasingly important. An immunisation pass app has been developed to enhance public confidence in travel, which is essential for the multi-trillion-dollar travel industry. This app allows users to monitor their immunity against contagious diseases, facilitating both domestic and international mobility while providing authorities with trustworthy health information. The app functions as a secure and anonymous way to verify immunisation status, supporting seamless movement in a post-lockdown world. It aids authorities in confirming immunity levels and plays a critical role in tracking and preventing infectious diseases, including potential future epidemics. Key health focus areas include vaccination/immunization, communicable diseases, and health promotion.