Abstract: A radio-frequency identification (RFID) card includes an RFID element that is adapted to store RFID data information, an antenna, electrically connected at each of two ends to the RFID element, and a piezoelectric element, electrically connected to at least one of the two ends of the antenna, whereby mechanical actuation of the piezoelectric element enables the antenna to be energized by a transmission from an RFID reader terminal, thereby powering the transmission of RFID data information from the RFID element to the RFID reader terminal. An RFID system includes such a card, and an RFID reader terminal.