SDID

Secure digital input/output (SIOD) cards, namely encoded electronic chip cards that can be used as a radio frequency identity (RFID) reader, a RFID writer or a RFID tag and supports near field communication (NFC) technology and contains user accessible flash memory adaptability; secure digital (SD) cards, namely encoded electronic chip cards that can be used as a radio frequency identity (RFID) reader, a RFID writer or a RFID tag and supports near field communication (NFC) technology