Human Aspects of IT for the Aged Population. Social Media, Games and Assistive Environments 5th International Conference, ITAP 2019, Held as Part of the 21st HCI International Conference, HCII 2019, Orlando, FL, USA, July 26-31, 2019, Proceedings, Part II

Digital Human Modeling and Applications in Health, Safety, Ergonomics and Risk Management. Human Body and Motion 10th International Conference, DHM 2019, Held as Part of the 21st HCI International Conference, HCII 2019, Orlando, FL, USA, July 26–31, 2019, Proceedings, Part I

Design, User Experience, and Usability. Practice and Case Studies 8th International Conference, DUXU 2019, Held as Part of the 21st HCI International Conference, HCII 2019, Orlando, FL, USA, July 26–31, 2019, Proceedings, Part IV

Social Computing and Social Media. Design, Human Behavior and Analytics 11th International Conference, SCSM 2019, Held as Part of the 21st HCI International Conference, HCII 2019, Orlando, FL, USA, July 26-31, 2019, Proceedings, Part I

Virtual, Augmented and Mixed Reality. Applications and Case Studies 11th International Conference, VAMR 2019, Held as Part of the 21st HCI International Conference, HCII 2019, Orlando, FL, USA, July 26–31, 2019, Proceedings, Part II

Human Aspects of IT for the Aged Population. Design for the Elderly and Technology Acceptance 5th International Conference, ITAP 2019, Held as Part of the 21st HCI International Conference, HCII 2019, Orlando, FL, USA, July 26-31, 2019, Proceedings, Part I

Digital Human Modeling and Applications in Health, Safety, Ergonomics and Risk Management. Healthcare Applications 10th International Conference, DHM 2019, Held as Part of the 21st HCI International Conference, HCII 2019, Orlando, FL, USA, July 26–31, 2019, Proceedings, Part II

HCI for Cybersecurity, Privacy and Trust First International Conference, HCI-CPT 2019, Held as Part of the 21st HCI International Conference, HCII 2019, Orlando, FL, USA, July 26–31, 2019, Proceedings

Human-Computer Interaction. Design Practice in Contemporary Societies Thematic Area, HCI 2019, Held as Part of the 21st HCI International Conference, HCII 2019, Orlando, FL, USA, July 26–31, 2019, Proceedings, Part III

Human-Computer Interaction. Recognition and Interaction Technologies Thematic Area, HCI 2019, Held as Part of the 21st HCI International Conference, HCII 2019, Orlando, FL, USA, July 26–31, 2019, Proceedings, Part II

Design, User Experience, and Usability. Design Philosophy and Theory 8th International Conference, DUXU 2019, Held as Part of the 21st HCI International Conference, HCII 2019, Orlando, FL, USA, July 26–31, 2019, Proceedings, Part I

HCI International 2019 – Late Breaking Papers 21st HCI International Conference, HCII 2019, Orlando, FL, USA, July 26–31, 2019, Proceedings