This book constitutes the refereed proceedings of the 19th International Conference on Pervasive Technologies Related to Assistive Environments, PETRA 2026, held in Crete, Greece, during July 12–15, 2026.The 72 full papers and 23 short papers included in this volume were carefully reviewed and selected from 106 submissions.The papers are organized in the following topical sections:Part I: Human Affect, Physiology, and Biosignal Analysis; Intelligent Interactive Systems, Simulation, and Applied AI; Human-Centered Robotics, Mobility, and Interaction; Language, Learning, and Robust Recognition Systems; Accessible AI and Assistive Technologies; Accessibility Tools, Methods and Applications; Cognitive, Ethical, and Social Dimensions of Interactive Systems; Posters.Part II: Advancing Smart Mirrors to Early Detect and Monitor Cancer Late-Effects through an Ethical and Participatory Approach (MAYA-Mirror); The 8th Workshop on Pervasive Intelligence in Engineering (PerInt); Robust Applied Intelligent Assistive Systems for Society & Enterprise (RAISE); Robotics and Physical AI for Physical and Cognitive Assistance (RAP-PAC); Smart Workers in Industry 5.0 — Human-Centric Assistance and Work Planning (SWI5); Immersive XR, AI, and Multimodal Sensing for Cognitiveand Functional Assessment (XR4CA); Generative AI and Large Language Models in Assistive Technologies (GenAssist).

This book constitutes the refereed proceedings of the 19th International Conference on Pervasive Technologies Related to Assistive Environments, PETRA 2026, held in Crete, Greece, during July 12–15, 2026.The 72 full papers and 23 short papers included in this volume were carefully reviewed and selected from 106 submissions.The papers are organized in the following topical sections:Part I: Human Affect, Physiology, and Biosignal Analysis; Intelligent Interactive Systems, Simulation, and Applied AI; Human-Centered Robotics, Mobility, and Interaction; Language, Learning, and Robust Recognition Systems; Accessible AI and Assistive Technologies; Accessibility Tools, Methods and Applications; Cognitive, Ethical, and Social Dimensions of Interactive Systems; Posters.Part II: Advancing Smart Mirrors to Early Detect and Monitor Cancer Late-Effects through an Ethical and Participatory Approach (MAYA-Mirror); The 8th Workshop on Pervasive Intelligence in Engineering (PerInt); Robust Applied Intelligent Assistive Systems for Society & Enterprise (RAISE); Robotics and Physical AI for Physical and Cognitive Assistance (RAP-PAC); Smart Workers in Industry 5.0 — Human-Centric Assistance and Work Planning (SWI5); Immersive XR, AI, and Multimodal Sensing for Cognitiveand Functional Assessment (XR4CA); Generative AI and Large Language Models in Assistive Technologies (GenAssist).

This book constitutes the refereed proceedings of the 19th International Conference on Pervasive Technologies Related to Assistive Environments, PETRA 2026, held in Crete, Greece, during July 12–15, 2026.The 72 full papers and 23 short papers included in this volume were carefully reviewed and selected from 106 submissions.The papers are organized in the following topical sections:Part I: Human Affect, Physiology, and Biosignal Analysis; Intelligent Interactive Systems, Simulation, and Applied AI; Human-Centered Robotics, Mobility, and Interaction; Language, Learning, and Robust Recognition Systems; Accessible AI and Assistive Technologies; Accessibility Tools, Methods and Applications; Cognitive, Ethical, and Social Dimensions of Interactive Systems; Posters.Part II: Advancing Smart Mirrors to Early Detect and Monitor Cancer Late-Effects through an Ethical and Participatory Approach (MAYA-Mirror); The 8th Workshop on Pervasive Intelligence in Engineering (PerInt); Robust Applied Intelligent Assistive Systems for Society & Enterprise (RAISE); Robotics and Physical AI for Physical and Cognitive Assistance (RAP-PAC); Smart Workers in Industry 5.0 — Human-Centric Assistance and Work Planning (SWI5); Immersive XR, AI, and Multimodal Sensing for Cognitiveand Functional Assessment (XR4CA); Generative AI and Large Language Models in Assistive Technologies (GenAssist).