Harri Oinas-Kukkonen, Sharon Nabwire, Elena Vlahu-Gjorgievska, M. Sriram Iyengar: Proceedings of the 12th International Workshop on Behavior Change Support Systems (BCSS 2024), Wollongong, Australia, April 10, 2024. CEUR Workshop Proceedings 3663, CEUR-WS.org 2024