The active badge location system
ACM Transactions on Information Systems (TOIS)
Situated information spaces and spatially aware palmtop computers
Communications of the ACM - Special issue on computer augmented environments: back to the real world
Providing location information in a ubiquitous computing environment (panel session)
SOSP '93 Proceedings of the fourteenth ACM symposium on Operating systems principles
The context toolkit: aiding the development of context-enabled applications
Proceedings of the SIGCHI conference on Human Factors in Computing Systems
The anatomy of a context-aware application
MobiCom '99 Proceedings of the 5th annual ACM/IEEE international conference on Mobile computing and networking
The Cricket location-support system
MobiCom '00 Proceedings of the 6th annual international conference on Mobile computing and networking
Advanced Interaction in Context
HUC '99 Proceedings of the 1st international symposium on Handheld and Ubiquitous Computing
ACTIVE MAP: A Visualization Tool for Location Awareness to Support Informal Interactions
HUC '99 Proceedings of the 1st international symposium on Handheld and Ubiquitous Computing
Challenge: ubiquitous location-aware computing and the "place lab" initiative
Proceedings of the 1st ACM international workshop on Wireless mobile applications and services on WLAN hotspots
ZoneZoom: map navigation for smartphones with recursive view segmentation
Proceedings of the working conference on Advanced visual interfaces
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The realisation of ubiquitous in- and out-door location awareness needs the exploration of scaleable hybrid solutions that can utilize existing infrastructures in novel and complimentary ways. Our hybrid solution (BlueStar) incorporates mobile terminals (GSM smart phones) with a two-phase approach to location awareness, using existing infrastructure. The first phase relies on a network based signal measurement (timing advance) and cell id. In the second phase the mobile terminal “sniffs” for the identification of local wireless devices, which act as “beacons”, in the environment. The mobile terminal does not connect to the beacons; it simple detects their presence. The aim is to offer a privacy enhanced yet flexible indoor/outdoor location management scheme, which allows for only the end-user to be aware of their fine-grained location data. A working example of our BlueStar system is presented along with a preliminary user study of “InfoHoard” a BlueStar game, in an indoor testing environment.