Technologies, Services and Content Creation for Interactive Digital TV -- Architecture for Interactivity in DTV Adapted to Cuban Conditions -- Development of a Gateway Server to Enhance Early Warning in Digital Terrestrial Television -- Personalized Enrichment of Video through a Crossmedia Environment -- Health and Socialization Through Interactive TV -- Physical Functionality in Older Adults through Interactive Digital TV Intervention -- Alexa, Send a Hug: TV and Virtual Assistants to Empower Older Adults and Stimulate Intergenerational Connections.-Encouraging Seniors to Get Active: Implementing a Gamification Strategy on Television -- User Interfaces, Interaction and Accessibility -- Public Transparency on Mobile Devices: An Evaluation of Brazilian Capital Transparency Portals Based on Heuristics -- Using EEG and Eye-Tracking to Identify Student Attention in Distance Education -- A Study on Methods Of Synchronization Between Gestural-Visual And Audiovisual Communication.

This book constitutes thoroughly refereed and revised selected papers from the 12th Iberoamerican Conference on Applications and Usability of Interactive TV, jAUTI 2023, held in Havana, Cuba, during October 16–17, 2023. The 9 full papers included in this book were carefully reviewed and selected from 25 submissions. They were organized in topical sections as follows: technologies, services and content creation for interactive digital TV; health and socialization through interactive TV; user interfaces, interaction and accessibility.