Special Issue on IoT, Sensor Networks and Blockchain Technology for Smart Cities and Societies.

The article discusses the growing interest in establishing smart cities based on the Internet of Things (IoT) and the challenges they face, particularly in terms of security. The article highlights a special issue of the IETE Journal of Research that focuses on IoT, sensor networks, and blockchain technology for smart cities and societies. The special issue contains 10 full papers that cover various topics such as urban land use change detection, air quality data imputation, steganographic approaches for secured communication, and agricultural applications using blockchain. The article expresses gratitude to the organizers and contributors of the special issue and hopes that it will be a valuable resource for researchers and engineers. [Extracted from the article]