Design, User Experience, and Usability. User Experience in Advanced Technological Environments 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 II - Marcus, Aaron; Marcus, Aaron; Wang, Wentao; Wang, Wentao (Springer International Publishing : Imprint: Springer, 2019)