Case Studies

The advancement of wireless communications,micro/nanofabrication, printing electronics, and integrated circuit technologies has enabled the development of low‐cost chipless radio‐frequency identification (RFID) sensor nodes. RFID technology is considered as the foundation for internet of things (IoT) and smart cities. The chipless RFID sensor can be used for various application areas such as food safety and retail, disaster management, health, military, homeland security, smart cities, transportation, agriculture, infrastructure, and environment monitoring. For each application area, there are different technical issues that researchers are currently resolving. However, many of them are trying to overcome the application‐specific technological challenge. Specifically, RFID readers need to reconfigure to operate in that application and RFID sensors position and orientation becomes vital for reading and interpolate results. In this regard, the effectiveness of some proposed approaches must be complemented by the supports of hardware design, implementation, and system integration.