RFID (Radio Frequency Identification) is a common term for any combination of circuitry which utilizes RF or microwave energy to provide a means of identification. Applications include identification of people or objects. A typical system uses a microchip to store information (a serial number, for example, or other information about a person or product) attached to an antenna for transmission. This combination is called an RFID tag. The tag contains a unique serial number but can have other info