The metaDESK: models and prototypes for tangible user interfaces
Proceedings of the 10th annual ACM symposium on User interface software and technology
Qualitative representation of positional information
Artificial Intelligence
i-LAND: an interactive landscape for creativity and innovation
Proceedings of the SIGCHI conference on Human Factors in Computing Systems
Augmented surfaces: a spatially continuous work space for hybrid computing environments
Proceedings of the SIGCHI conference on Human Factors in Computing Systems
Urp: a luminous-tangible workbench for urban planning and design
Proceedings of the SIGCHI conference on Human Factors in Computing Systems
Sensetable: a wireless object tracking platform for tangible user interfaces
Proceedings of the SIGCHI Conference on Human Factors in Computing Systems
The cricket compass for context-aware mobile applications
Proceedings of the 7th annual international conference on Mobile computing and networking
Navigational blocks: navigating information space with tangible media
Proceedings of the 7th international conference on Intelligent user interfaces
A tangible interface for organizing information using a grid
Proceedings of the SIGCHI Conference on Human Factors in Computing Systems
TRIP: A Low-Cost Vision-Based Location System for Ubiquitous Computing
Personal and Ubiquitous Computing
Supporting opportunistic communication in mobile settings
CHI '00 Extended Abstracts on Human Factors in Computing Systems
Modeling the Basic Meanings of Path Relations
IJCAI '99 Proceedings of the Sixteenth International Joint Conference on Artificial Intelligence
Low Cost Indoor Positioning System
UbiComp '01 Proceedings of the 3rd international conference on Ubiquitous Computing
Context Acquisition Based on Load Sensing
UbiComp '02 Proceedings of the 4th international conference on Ubiquitous Computing
Location of Mobile Devices Using Networked Surfaces
UbiComp '02 Proceedings of the 4th international conference on Ubiquitous Computing
The Location Stack: A Layered Model for Location in Ubiquitous Computing
WMCSA '02 Proceedings of the Fourth IEEE Workshop on Mobile Computing Systems and Applications
Physical Objects as Bidirectional User Interface Elements
IEEE Computer Graphics and Applications
Sensing and visualizing spatial relations of mobile devices
Proceedings of the 18th annual ACM symposium on User interface software and technology
BeepBeep: a high accuracy acoustic ranging system using COTS mobile devices
Proceedings of the 5th international conference on Embedded networked sensor systems
Ultrasound-aided pedestrian dead reckoning for indoor navigation
Proceedings of the first ACM international workshop on Mobile entity localization and tracking in GPS-less environments
Spontaneous mobile device authentication based on sensor data
Information Security Tech. Report
Proceedings of the 10th workshop on Mobile Computing Systems and Applications
Towards human-centered support for indoor navigation
Proceedings of the SIGCHI Conference on Human Factors in Computing Systems
Supporting device discovery and spontaneous interaction with spatial references
Personal and Ubiquitous Computing
Towards context-aware face anonymisation
Proceedings of the 7th International Conference on Mobile and Ubiquitous Multimedia
Enabling Pervasive Collaboration with Platform Composition
Pervasive '09 Proceedings of the 7th International Conference on Pervasive Computing
A Secure Framework for Location Verification in Pervasive Computing
WASA '09 Proceedings of the 4th International Conference on Wireless Algorithms, Systems, and Applications
A taxonomy for and analysis of multi-person-display ecosystems
Personal and Ubiquitous Computing
International Journal of Human-Computer Studies
Exploiting low complexity motion for ad-hoc localisation
International Journal of Sensor Networks
Removing systematic error in node localisation using scalable data fusion
EWSN'07 Proceedings of the 4th European conference on Wireless sensor networks
Symbolic object localization through active sampling of acceleration and sound signatures
UbiComp '07 Proceedings of the 9th international conference on Ubiquitous computing
UbiComp '07 Proceedings of the 9th international conference on Ubiquitous computing
Inferring and distributing spatial context
EuroSSC'07 Proceedings of the 2nd European conference on Smart sensing and context
A framework for utilizing qualitative spatial relations between networked embedded systems
Pervasive and Mobile Computing
Ensemble: cooperative proximity-based authentication
Proceedings of the 8th international conference on Mobile systems, applications, and services
Self-organized togetherness in a crowd group
Proceedings of the 7th International Conference on Frontiers of Information Technology
Air-Writing: a platform for scalable, privacy-preserving, spatial group messaging
Proceedings of the 12th International Conference on Information Integration and Web-based Applications & Services
Using a spatial context authentication proxy for establishing secure wireless connections
Journal of Mobile Multimedia
Proceedings of the ACM SIGCOMM 2011 conference
PANDAA: physical arrangement detection of networked devices through ambient-sound awareness
Proceedings of the 13th international conference on Ubiquitous computing
Virtual compass: relative positioning to sense mobile social interactions
Pervasive'10 Proceedings of the 8th international conference on Pervasive Computing
Constraint-Based distance estimation in ad-hoc wireless sensor networks
EWSN'06 Proceedings of the Third European conference on Wireless Sensor Networks
Virtual lifeline: Multimodal sensor data fusion for robust navigation in unknown environments
Pervasive and Mobile Computing
SwordFight: enabling a new class of phone-to-phone action games on commodity phones
Proceedings of the 10th international conference on Mobile systems, applications, and services
Push the limit of WiFi based localization for smartphones
Proceedings of the 18th annual international conference on Mobile computing and networking
Proceedings of the 2012 ACM Conference on Ubiquitous Computing
Cooperative Enhancement of Position Accuracy of Unmanned Aerial Vehicles
Proceedings of International Conference on Advances in Mobile Computing & Multimedia
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If a mobile computing device knows how it is positioned and oriented in relation to other devices nearby, then it can provide enhanced support for multi-device and multi-user interactions. Existing systems that provide position information to mobile computers are reliant on externally deployed infrastructure, such as beacons or sensors in the environment. We introduce the Relate system, which provides fine-grained relative position information to co-located devices on the basis of peer-to-peer sensing, thus overcoming dependence on any external infrastructure. The system is realised as a hardware/software plug-in, using ultrasound for peer-to-peer sensing, USB to interface with standard mobile devices, and data abstraction and inferencing to map sensor data to a spatial model that maintains both quantitative and qualitative relationships. We present a set of services and applications to demonstrate the utility of the system. We report experimental results on the accuracy of the relative position and orientation estimates, and other aspects of system performance.