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The proliferation of Internet of Things (IoT) has enabled rapid enhancements for applications, not only in home and environment scenarios, but also in factory automation. Now, Industrial Internet of Things (IIoT) offers all the advantages of IoT to industry, with applications ranging from remote sensing and actuating, to de-centralization and autonomy. In this book, the editor presents the IIoT and its place during the new industrial revolution (Industry 4.0) as it takes us to a better, sustainable, automated, and safer world. The book covers the cross relations and implications of IIoT with existing wired/wireless communication/networking and safety technologies of the Industrial Networks. Moreover, the book includes practical use-case scenarios from the industry for the application of IIoT on smart factories, smart cities, and smart grids. IoT-driven advances in commercial and industrial building lighting and in street lighting are presented as an example to shed light on the application domain of IIoT. The state of the art in Industrial Automation is also presented to give a better understanding of the enabling technologies, potential advantages, and challenges of the Industry 4.0 and IIoT. Finally, yet importantly, the security section of the book covers the cyber-security related needs of the IIoT users and the services that might address these needs. User privacy, data ownership, and proprietary information handling related to IIoT networks are all investigated. Intrusion prevention, detection, and mitigation are all covered at the conclusion of the book.

In this paper, we investigate applications of access control to Wireless Sensor Networks (WSNs). Although access control was well established for traditional computer systems, it has not been studied thoroughly in WSN environments. We briefly provide the WSN specifications and then stress the constraints of the WSNs that would affect the access control implementation. We also provide a literature overview and discuss further possible solutions. Index Terms—wireless sensor networks, security, access control I. INTRODUCTION Wireless Sensor Networks (WSNs) continue to grow as one of the most exciting and challenging research areas of engineering. There are many applications of WSNs which are intended to monitor physical and environmental phenomena such as ocean and wildlife, earthquakes, pollution, wild fire, and water quality and also to gather information regarding human activities such as health care, manufac- turing machinery performance, building safety, military surveillance and reconnaissance, highway traffic, etc. WSNs are characterized by severely constrained computational and energy resources, and an ad hoc operational environment. They have unique characteristics such as limited power supplies, low transmission bandwidth, small memory sizes and limited energy; therefore security techniques used in traditional networks cannot be adopted directly. Access control in such a resource constrained WSN with minimum overhead provides significant challenges, and is an ongoing area of research. The rest of the paper is organized as follows: Section II provides the challenges of access control research in WSNs. Section III reviews related works in the literature. Section IV presents further possible solutions. Finally Section V concludes the paper and outlines future work.