Chau, Iok FongIok FongChauCardoso, Jorge C. S.Jorge C. S.CardosoEstadieu, GeraldGeraldEstadieu2024-04-022024-04-022021978-3-030-89393-4 978-3-030-89394-1https://dspace.usj.edu.mo/handle/123456789/5616This paper reports a work-in-progress that explores the use of 3D-printing for marker-based Tangible User Interfaces for use with smartphone-based eXtended Reality experiences. We have explored several ways to 3D-print matrix markers that are re-con gurable so that the underlying values can change with user interaction. We have also applied 3D-printed markers to the development of modular playset for exploring the Guia Fortress cultural heritage site in Macau SAR, China. We report some of the explorations of 3D-printed markers and describe the Virtual Guia Fortress playset.en3D-printingTangible User InterfaceVirtual RealityAugmented RealityMixed RealityConference Paper