The cellular phone network has been increasing rapidly during the last
years. For many people the mobile phone has become an every day gadget
with a wide performance and functional range. The usage of technologies
like GPRS, HSCSD, EDGE and UMTS as well as the bandwidth of networks and
consequently the connectivity of the phones has also increased
persistently. Coming along with that, three technologies, which are
ubiquitous or pervasive computing, mobile and wireless networks and
location-based technologies, are making rapid progress. The aim of this
book is to offer an architecture for a context-aware user interface in
the intersection of the three technologies mentioned above. The system
should work with a minimum of special hardware requirement. Not to
overload the user with information, the user interface should be
adaptable, context-aware and location-based. The contextdata should
remain extendible and adaptable.