Christian Kahl

How to enhance Privacy and Identity Management for Mobile Communities: Approach and User driven Concepts of the PICOS Project

Mobility allows social communities to become a ubiquitous part of our daily lives. However, as users in such communities share huge amounts of personal data and contents, new challenges emerge with regard to privacy and trust. In this paper we motivate the necessity of advanced privacy enhancing concepts, especially for mobile communities and outline the approach of the PICOS project in order to elaborate such concepts. We explicate how we collected mobile community requirements and elaborated adequate concepts to address them. Finally, we conclude with details on how the concepts were prototypically implemented to demonstrate their feasibility, what distinguishes them from existing work, and how we intend to transfer the concepts to practice.

Design and Implementation of Context-Sensitive Mobile Marketing Platforms

The increasing competition in the mobile marketing market indicates that Mobile Marketing platform providers will be forced to integrate identity- and context information offered by the mobile network, in order to improve the efficiency of their applications. However, existing concepts/implementations only unassertively exploit available opportunities as well as insufficiently address emerging impacts in this context. This paper discusses these issues and shows how to consider them when designing mobile marketing platforms. In order to demonstrate the feasibility of such a concept, a prototypical implementation is build and documented. Besides showing the feasibility of the concept, the foundation for conducting empirical research (e.g. user acceptance tests) about the young field of context-sensitive Mobile Marketing is provisioned.

Privacy respecting targeted advertising for social networks

Online Social Networks form an increasingly important part of peoples lives. As mobile technologies improve accessibility, concerns about privacy and trust are more apparent as advertising becomes a critical component of most social networks economic model. In this paper we describe the PICOS projects research into privacy preserving advertising options for social networks. We introduce an architecture that includes new concepts and technologies specifically designed to improve privacy and trust as well as advertising opportunities within social networks.

How to Unleash the Virus -- Social Networks as a Host for Viral Music Marketing

With the rise of social networks the ways in which consumers communicate have changed sustainably. Companies recognise this change, and use word-of-mouth communication and viral marketing as means to reflect this change and to communicate with consumers and attract their attention. This is particularly true for the music business, where viral marketing is important. However, at the same time knowledge is missing regarding the systematic conduction of viral marketing in social networks, especially for music. Therefore, in this paper it is analysed (1) how the characteristics of digital music affect the viral marketing process, (2) critical factors for the viral marketing of digital music are derived and (3) the factors are evaluated in qualitative interviews. Thereby this paper (1) contributes to the understanding of how social networks can be used for viral marketing activities and (2) provides a scientific foundation and practical guiding points for the systematic undertaking of viral marketing of digital music in social networks. The findings are important for the emerging area of research on viral music marketing and for the challenges of music marketers in practice.

Enhanced Privacy and Identity Management for Community Services - Demo of the PICOS Project

As online communities get increasingly mobile, enabling new location based community services, including privacy and trust for their users gets more important. Within the PICOS project we investigated and elaborated innovative concepts to improve the privacy of users within mobile communities based on three exemplary communities.