Stefan Pfeiffer

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Fences are used all over the world to protect areas against unauthorized access. While most fences meet these requirements by building a physical and psychological barrier against intruders, this is not sufficient for areas of particular interest like restricted areas of an airport or construction sites with expensive goods. To detect intruders we integrate(More)
In diesem Artikel diskutieren wir Möglichkeiten für die Umsetzung datenschutzfreundlicher und sicherer Lösungen für das Internet der Dinge unter besonderer Berücksichtigung der Benutzbarkeit. Als entscheidendes Moment für die angestrebte Nutzerakzeptanz erweist sich dabei ihre frühzeitige Einbeziehung — bereits in der konzeptionellen Phase der Entwicklung(More)
This paper analyzes the requirements of mobile health applications concerning real-time criteria and describes the current state of real-time capabilities on constrained devices and low-power networks. Based on this analysis we observe that for these applications real-time capabilities are not only required per system, but also for the entire distributed(More)
Versatility and real world applicability are key features of Wireless Sensor Networks (WSNs). In order to achieve these benefits we have to face the challenges of high practical relevance during application. We deploy and evaluate the concrete example of a fence monitoring task to reveal how our distributed event detection system is able to perform under(More)
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