The RFID shielding card uses a signal circuit board with shielding technology to shield RFID signals. We put the high-frequency shielding card in the wallet or within 3cm of the position where we want to shield the signal of a certain card to achieve the effect of shielding the signal, no matter Whatever device the criminals use, they cannot steal your card information to ensure safe portability and prevent information leakage. The high-frequency shielding card can be allocated with LED lights and two without LED lights, such as with LEDs: when criminals bring special stealing signal equipment close to you, the anti-theft card LED will light up to act as a reminder.