The Hongkong Post’s first application of augmented reality (AR) technology in stamp design was released. By using the mobile app ”  HKPostStamp” to scan the stamp set on“Revitalisation of Historic Buildings in Hong Kong II”, the 3D models of the buildings on the stamps will be displayed, and 360-degree photos of these buildings will also be provided. Moreover, these 3D models of the buildings will be superimposed on a real-time background that changes from day to dusk to night, creating a brand new and immersive experience in stamp collecting.