Secure Smart City Infrastructure Using Digital Twin and Blockchain

A digital replica of any physical system or process is referred to as a digital twin (DT). In general, a DT is a software program that accepts real-world data of a physical system at ground level as inputs and creates useful outputs in the form of insights. At the moment, the manufacturing industry and business are concentrating their efforts on this technology. Due to the outbreak of COVID-19, the entire globe has turned to virtual meetings and live video interactions in various fields as health care, business, and education. We explore the most recent viewpoints and future technology trends that are most likely to drive DT in this study. The incorporation of blockchain in DT will allow the network to efficiently monitor and manage resource consumption and sharing. The idea of a digital twin of a smart city is presented in this article. Smart city development aims to enhance not just the city's overall performance, but also its basic infrastructure, procedures, and facilities, as well as its socioeconomic wellbeing. In order to strengthen security and privacy in smart cities, we examine how security may influence the DT. We offer a complete analysis of blockchain-based DT in this article. Overall, our study aims to give insightful direction for digital twin security and privacy research.