RFID systems, or Radio Frequency Identification systems, use radio waves to automatically identify and track tags attached to objects. Each tag contains a microchip with data and an antenna that communicates with a reader. This technology is commonly used in various industries, including retail, logistics, and healthcare, to improve inventory management and enhance security. The main components of an RFID system include the RFID tags, the RFID readers, and the software that processes the data. RFID tags can be passive, active, or semi-passive, depending on their power source. This system allows for quick and accurate data collection without the need for direct line-of-sight, making it efficient for tracking items in real-time.