A multi-frequency radio frequency identification RFID tag , comprising: an RFID module including: an integrated circuit IC chip ; and a coupling antenna electrically coupled to the IC chip ; and said RFID tag further comprising a second antenna inductively or capacitively coupled to the IC chip , respectively, via inductive or capacitive coupling of the coupling antenna to the second antenna and configured to operate in a second frequency range, characterized by the RFID module being detachable from the RFID tag ; the RFID module further comprises a first antenna electrically coupled to the IC chip , wherein the first antenna is configured to operate in a first frequency range in conjunction with the IC chip ; the second antenna includes an aperture configured to receive the RFID module , wherein the second antenna is coupled to the IC chip when the RFID module is placed in the aperture and the second antenna is disabled when the RFID module is removed from the aperture, .1 and the coils or loops that form the first antenna are constructed using conductive ink. an integrated circuit IC chip ; and a coupling antenna electrically coupled to the IC chip ; and said RFID tag further comprising a second antenna inductively or capacitively coupled to the IC chip , respectively, via inductive or capacitive coupling of the coupling antenna to the second antenna and configured to operate in a second frequency range, characterized by the RFID module being detachable from the RFID tag ; the RFID module further comprises a first antenna electrically coupled to the IC chip , wherein the first antenna is configured to operate in a first frequency range in conjunction with the IC chip ; the second antenna includes an aperture configured to receive the RFID module , wherein the second antenna is coupled to the IC chip when the RFID module is placed in the aperture and the second antenna is disabled when the RFID module is removed from the aperture, .1 and the coils or loops that form the first antenna are constructed using conductive ink. said RFID tag further comprising a second antenna inductively or capacitively coupled to the IC chip , respectively, via inductive or capacitive coupling of the coupling antenna to the second antenna and configured to operate in a second frequency range, characterized by the RFID module being detachable from the RFID tag ; the RFID module further comprises a first antenna electrically coupled to the IC chip , wherein the first antenna is configured to operate in a first frequency range in conjunction with the IC chip ; the second antenna includes an aperture configured to receive the RFID module , the RFID module being detachable from the RFID tag ; the RFID module further comprises a first antenna electrically coupled to the IC chip , wherein the first antenna is configured to operate in a first frequency range in conjunction with the IC chip ; the second antenna includes an aperture configured to receive the RFID module , wherein the second antenna is coupled to the IC chip when the RFID module is placed in the aperture and the second antenna is disabled when the RFID module is removed from the aperture, .1 and the coils or loops that form the first antenna are constructed using conductive ink. <EOS>