Gabor Marton

Privacy enhancing service architectures

Following from privacy requirements, new architecture solutions for personalized services are expected to emerge. This paper proposes a conceptual framework for designing privacy enabling service architectures, with a special emphasis on the mobile domain. The treatment of the subject is based on the principle of separating identity and profile information. Basic building blocks such as Identity Broker, Profile Broker, Contract Broker and Authenticator are identified and then put together in different ways resulting in variations on the architecture theme.

Mobile Data Replication Utilizing The Ternary Connectivity Model

In contrast to the mainstream approach where mobile devices have two states: connected or not-connected, we analyse mobile database replication in a setting with three states: good connection, reasonable connection and no connection. Using this as our starting point, we develop a new approach to data replication which is able to take advantage of the capabilities of the different connection alternatives. As a result of this approach, mobile devices can better utilize the available connection and are capable of optimizing for different goals such as availability and cost. Implementation details as well as experiences with a prototype implementation are also discus

Architecture and Performance of XML-Based Componentization of the Symbian Smartphone Platform

Service-oriented architecture (SOA) is common in enterprise back-ends and is finding its way to mainstream desktop systems. SOA is traditionally built on top of an existing component infrastructure. This paper investigates how a similar architecture can be realized in mobile devices based on the Symbian operating system; in an environment that does not have a fully-fledged component infrastructure. The proposed middleware merges the service-oriented and component layers into a single architectural layer. The paper introduces details of this design, implementation and investigates its implications on overall performance

Delivering Personalized Local Services

Aspects of delivering personalized local services are briefly investigated, such as content delivery, authentication, attribute exchange, payment and user privacy. The main emphasis is on services that reach the users from their physical vicinity via their mobile handsets. The proposed solutions are demonstrated by showcasing a local service at an imaginary music store, with two alternatives of content presentation: XHTML browsing and Java MIDlet.