Constitutes the refereed proceedings of the 7th International Conference on Ubiquitous Computing, UbiComp 2005, held in Japan in September 2005. These papers address topics related to human-computer interface (HCI), systems, context recognition and use, communications, and social implications and applications of computing.

CarpetLAN: A Novel Indoor Wireless(-like) Networking and Positioning System.- u-Texture: Self-Organizable Universal Panels for Creating Smart Surroundings.- Fast and Robust Interface Generation for Ubiquitous Applications.- Analysis of Chewing Sounds for Dietary Monitoring.- Preventing Camera Recording by Designing a Capture-Resistant Environment.- Self-Mapping in 802.11 Location Systems.- A Study of Bluetooth Propagation Using Accurate Indoor Location Mapping.- A New Method for Auto-calibrated Object Tracking.- Accurate GSM Indoor Localization.- Learning and Recognizing the Places We Go.- Visually Interactive Location-Aware Computing.- DigiDress: A Field Trial of an Expressive Social Proximity Application.- Control, Deception, and Communication: Evaluating the Deployment of a Location-Enhanced Messaging Service.- Place-Its: A Study of Location-Based Reminders on Mobile Phones.- Time, Ownership and Awareness: The Value of Contextual Locations in the Home.- Living for the Global City: Mobile Kits, Urban Interfaces, and Ubicomp.- From Interaction to Participation: Configuring Space Through Embodied Interaction.- Scanning Objects in the Wild: Assessing an Object Triggered Information System.- Abaris: Evaluating Automated Capture Applied to Structured Autism Interventions.- To Frame or Not to Frame: The Role and Design of Frameless Displays in Ubiquitous Applications.- Picking Pockets on the Lawn: The Development of Tactics and Strategies in a Mobile Game.- ActiveTheatre — A Collaborative, Event-Based Capture and Access System for the Operating Theatre.