An RFID system (Radio Frequency Identification) uses 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 applications, such as inventory management, access control, and supply chain tracking. The RFID reader emits radio waves that activate the tag, allowing it to transmit its stored information back to the reader. This process enables quick and accurate data collection without the need for direct line-of-sight, making it more efficient than traditional barcode systems.