Charting past, present, and future research in ubiquitous computing
ACM Transactions on Computer-Human Interaction (TOCHI) - Special issue on human-computer interaction in the new millennium, Part 1
Web Services and Business Transactions
World Wide Web
Ubiquitous computing using SIP
NOSSDAV '03 Proceedings of the 13th international workshop on Network and operating systems support for digital audio and video
User needs for location-aware mobile services
Personal and Ubiquitous Computing
Using Context for Supporting Users Efficiently
HICSS '03 Proceedings of the 36th Annual Hawaii International Conference on System Sciences (HICSS'03) - Track 5 - Volume 5
Sm@rtLibrary - An Infrastructure for Ubiquitous Technologies and Applications
ICDCSW '01 Proceedings of the 21st International Conference on Distributed Computing Systems
Gravity: supporting dynamically available services in client-side applications
Proceedings of the 9th European software engineering conference held jointly with 11th ACM SIGSOFT international symposium on Foundations of software engineering
Ubiquitous information services with JAIN platform
Mobile Networks and Applications - Mobile networking through IP
Service components for managing the life-cycle of service compositions
Information Systems - Special issue: The 14th international conference on advanced information systems engineering (CAiSE*02)
Information intelligence: metadata for information discovery, access, and integration
Proceedings of the 2005 ACM SIGMOD international conference on Management of data
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Web service is one of the important components of the new computing paradigm, which uses the Web technologies for building distributed systems. This paper presents a design and implementation of a secured GIS Web Service for mobile devices. As many mobile devices are equipped with GPS (Global Positioning System), it is required to handle the position information more effectively. We have extended the proxy program in the client device to actively send the context information to the server. Based on the context information the server determines the optimal service mode to a particular client. Because the Web service interfaces open network domain, proper security model should be incorporated for classified information. A working example of location-based secured GIS Web Service is presented. By using Web Service standards and XML messages we can achieve the maximal interoperability for heterogeneous mobile devices.