With the continuous development of distributed ledger and blockchain technologies, new use cases apart from cryptocurrencies have come into the spotlight. In this article, we evaluate whether an e-government service could be a suitable candidate for a blockchain transformation. We selected as a reference test system an existing cross-border e-government service that is used for supporting goods exchanges across the European Union. We show how such an indicative paradigm can be transformed into a blockchain system. In order to do so, we deployed it in an emulated architecture for evaluating its performance under various realistic conditions. Our results show that the deployed system is able to meet the requirements, both in terms of throughput and transaction speed. Moreover, it shows clear advantages in terms of usability and synchronization between all entities.
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Abstract-Within the hospital or extended care environment, there is an overwhelming need for constant monitoring of vital body functions and support for patient mobility. Tomorrow's biomedical networks will address these needs by incorporating new technologies like wireless sensor networks into their infrastructure. However, wireless transmission of sensitive patient data presents some obvious security concerns. In this paper we discuss these concerns and how they are addressed by existing systems. We also discuss issues that need further consideration, such as run-time composition of security services depending on the criticality of data transmitted along with a solution for practical sensor systems using TinyOS. Finally, we propose intrusion detection as a future research direction for biomedical sensor networks and we elaborate on the main components of such a system.
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