Distributed, Ambient and Pervasive Interactions: Understanding Humans. Proceedings of the 6th International Conference, DAPI 2018, Held as Part of HCI International 2018, Las Vegas, NV, USA, July 15-20, 2018, Part I, ISBN 978-3-319-91124-3, Springer, Berlin/Heidelberg, LNCS 10921, 469 pages.