Pervasive computing : second International Conference, PERVASIVE 2004, Linz/Vienna, Austria, April 18-23, 2004 : proceedings

Activity Recognition.- Activity Recognition from User-Annotated Acceleration Data.- Recognizing Workshop Activity Using Body Worn Microphones and Accelerometers.- "Are You with Me?" - Using Accelerometers to Determine If Two Devices Are Carried by the Same Person.- Context Computing.- Context Cube: Flexible and Effective Manipulation of Sensed Context Data.- A Context-Aware Communication Platform for Smart Objects.- Siren: Context-aware Computing for Firefighting.- Near Body Interfaces.- Spectacle-Based Design of Wearable See-Through Display for Accommodation-Free Viewing.- A Compact Battery-Less Information Terminal for Real World Interaction.- Software.- INCA: A Software Infrastructure to Facilitate the Construction and Evolution of Ubiquitous Capture & Access Applications.- Sensors.- Activity Recognition in the Home Using Simple and Ubiquitous Sensors.- Automatic Calibration of Body Worn Acceleration Sensors.- Reject-Optional LVQ-Based Two-Level Classifier to Improve Reliability in Footstep Identification.- Issues with RFID Usage in Ubiquitous Computing Applications.- Security.- A Fault-Tolerant Key-Distribution Scheme for Securing Wireless Ad Hoc Networks.- ProxNet: Secure Dynamic Wireless Connection by Proximity Sensing.- Tackling Security and Privacy Issues in Radio Frequency Identification Devices.- Architectures and Systems.- Towards Wearable Autonomous Microsystems.- Ubiquitous Chip: A Rule-Based I/O Control Device for Ubiquitous Computing.- eSeal - A System for Enhanced Electronic Assertion of Authenticity and Integrity.- Algorithms.- A Distributed Precision Based Localization Algorithm for Ad-Hoc Networks.- Adaptive On-Device Location Recognition.- Accommodating Transient Connectivity in Ad Hoc and Mobile Settings.- New Interfaces.- Microbiology Tray and Pipette Tracking as a Proactive Tangible User Interface.- Augmenting Collections of Everyday Objects: A Case Study of Clothes Hangers As an Information Display.- MirrorSpace: Using Proximity as an Interface to Video-Mediated Communication.- SearchLight - A Lightweight Search Function for Pervasive Environments.