Design of Physical Security for Constrained End Devices within the IoT Ecosystem

With the enormous growth of the market with remote sensors/actuators provided with internet connectivity forming the Internet of Things (IoT) comes new and new challenges in the field of communication technologies itself but also in terms of physical and cyber security. Over the last years, the cyber security of these devices has been well considered, and many new approaches to protecting these devices have emerged. On the other side, as the remote sensors were mostly very low-cost, propper physical protection was not cost-effective. But recently, new use cases demanding more complex devices have changed this view. In this paper, we thus propose a proof-of-concept design of the physical security of such devices providing intrusion and sensitive data protection with the capability of physical access for maintenance by an authentication method suitable for constrained devices.