RFID Card or Tag consists of an antenna and an IC for storing the data. The range is typically 100 feet or more.Data can be read or write from the cards as they consists of EEPROM.RFID Cards can be either active type or passive type. Usually, passive RFID cards are read only type i.e.The required power for the operation is drawn from the electromagnetic field generated by the RFID reader.
Data, which is programmed by the manufacturer, can only be read by the reader.
