[Machine Translation] At an automatic ticket gate! At automatic payment machines! No batteries required! Glow when held up! Automatic ticket checkers on trains and buses. Electronic money payment machines at convenience stores, supermarkets and vending machines. It emits light without batteries by reacting to radio waves from contactless IC card readers such as ID card entry/exit checkers such as employee ID cards. By catching the electromagnetic waves (NFC radio waves) emitted from IC card readers and other devices and converting them into a weak current on the card side, the ultra-thin mini LED bulb built into the card emits light throughout the card.