Next century challenges: Nexus—an open global infrastructure for spatial-aware applications
MobiCom '99 Proceedings of the 5th annual ACM/IEEE international conference on Mobile computing and networking
A Scalable Location Aware Service Platform for Mobile Applications Based on Java RMI
USM '00 Proceedings of the Third International IFIP/GI Working Conference on Trends in Distributed Systems: Towards a Universal Service Market
Location of Mobile Devices Using Networked Surfaces
UbiComp '02 Proceedings of the 4th international conference on Ubiquitous Computing
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International Journal of Mobile Communications
PCI'05 Proceedings of the 10th Panhellenic conference on Advances in Informatics
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Wireless Internet access based on wireless LAN orBluetooth networks will become popular within the nextyears.New services will be offered that especially makeuse of location and personal profile to filter Internetaccess.Moreover "Push" services will allow theunsolicited event based information transfer dependingon user configurations.We have introduced such services"The Mobile Fairguide" during CeBIT 2001 in abluetooth network that covered a full hall of 25000 m 2with 130 base-stations.The content was generated fromthe official CeBIT database.We were able to show thatbluetooth is a usable technology for such applicationsespecially if PDAs are used as terminal devices.Moreover we tested our architecture in a real livescenario especially with respect to scalability andmobility.The additional services like guiding, alarmingand broadcasting were offered and appreciated by thevisitor.The remaining problems resulting from missingprotocols and faults in the base-band implementation ofthe selected chip-set have been fixed in the meantime