An RFID system is a technology infrastructure that consists of RFID tags, RFID readers or scanners, and a backend database or software system. RFID systems are used for identifying, tracking, and managing objects, assets, or individuals remotely and automatically. The basic components of an RFID system include RFID tags, which contain electronically encoded information, RFID readers or scanners, which read and write data to the tags wirelessly using radio waves, and a backend system, which processes and manages the data collected from the tags. RFID systems come in various configurations and implementations, ranging from simple standalone systems to complex networked deployments. They are used in a wide range of applications across industries, including retail, manufacturing, logistics, healthcare, and transportation. RFID systems offer advantages such as real-time tracking, improved inventory management, increased operational efficiency, and enhanced security. However, they also raise privacy and security concerns, as they can potentially be used for unauthorized tracking or surveillance.

References: - https://en.wikipedia.org/wiki/Radio-frequency_identification