This book presents the Proceedings of the 12th Machine Intelligence and Digital Interaction Conference, and it combines two disciplines of research. The rapid progress in artificial intelligence research and the widespread use of interactive technologies are fundamentally changing our daily lives. This has given rise to new social dynamics, compelling nations around the world to develop new insights and strategies. Addressing these changes effectively demands a multidisciplinary strategy, uniting experts from AI and human-computer interaction with both academic researchers and industry practitioners. The proceedings from the 2024 MIDI conference offer the latest research on the convergence of these two formerly separate fields.