▸ Multi‑modal interaction (speech, gesture, gaze, haptics, BCI)
▸ Voice user interfaces and conversational AI
▸ Virtual, augmented, and mixed reality interfaces
▸ User experience design, usability engineering, and UX metrics
▸ Human–AI collaboration and decision support
▸ Human–robot interaction and collaborative robotics
▸ Trust, transparency, and ethics in human‑machine systems
▸ Cognitive modeling and human factors in interactive systems
▸ Accessible, assistive, and inclusive interaction technologies
▸ Affective computing and human‑centered AI
▸ Pervasive/ubiquitous computing and wearable interaction
▸ Interaction data analytics, privacy, and ethics