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Wireless Sensor Networks (WSNs) often lack interfaces for remote debugging.Thus, fault diagnosis and troubleshooting are conducted at the deployment site.Currently, WSN operators lack dedicated tools that aid them in this process.Therefore, we introduce EyeSec, a tool for WSN monitoring and maintenance inthe field. An Augmented Reality Device (AR Device) identifies sensor nodesusing optical markers. Portable Sniffer Units capture network traffic andextract information. With those data, the AR Device network topology and dataflows between sensor nodes are visualized. Unlike previous tools, EyeSec isfully portable, independent of any given infrastructure and does not requirededicated and expensive AR hardware. Using passive inspection only, it can beretrofitted to already deployed WSNs. We implemented a proof of concept onlow-cost embedded hardware and commodity smart phones and demonstrate the usageof EyeSec within a WSN test bed using the 6LoWPAN transmission protocol.

EyeSec: A Retrofittable Augmented Reality Tool for Troubleshooting Wireless Sensor Networks in the Field