The book "Distributed, Ambient, and Pervasive Interactions" is a collection of selected contributions from DAPI 2015, which took place during the 17th International Conference on Human-Computer Interaction (HCII 2015) in Los Angeles. This conference brought together 15 thematically related events and presented a total of 1462 scientific papers as well as 246 posters, carefully selected from over 4800 submissions. The contributions in this volume illuminate the latest research and development efforts in the field of human-computer interaction and emphasize the human aspects of the design and use of computer systems. The topics covered range from the design of intelligent environments to natural interactions, smart devices, and the detection of movement and activities. This book is a valuable resource for researchers and practitioners dealing with the challenges and opportunities of modern interaction technologies.