The technology that uses electromagnetic fields to automatically identify and track tags attached to objects is known as Radio Frequency Identification (RFID). RFID systems consist of three main components: a tag, a reader, and an antenna. The tag contains a microchip with data and an antenna for transmitting signals. When activated by the reader's electromagnetic field, the tag emits its data, which the reader captures. This technology is widely used in various applications, including inventory management, supply chain tracking, and access control systems. RFID enhances efficiency and accuracy in object tracking.