# Does RFID Blocking Card Work? ## Understanding RFID Technology and Security Concerns RFID blocking cards are designed to protect your contactless credit cards, passports, and other RFID-enabled items from unauthorized scanning. As someone who frequently travels and values digital security, I've personally tested various RFID protection products. My experience with identity theft attempts during international trips made me particularly aware of this vulnerability. ## How RFID Blocking Technology Functions RFID blocking cards work by creating a Faraday cage effect around your protected items. This technology uses conductive materials to disrupt electromagnetic fields, preventing RFID readers from accessing your card's data. I discovered I have a knack for understanding electromagnetic principles, which helped me evaluate different protection methods effectively. ### Technical Specifications of TIANJUN RFID Blocking Card **Model:** TJ-RFID-2023-Pro **Dimensions:** 85.6mm × 54mm × 0.8mm (standard credit card size) **Protection Frequency:** 13.56 MHz (covers most RFID/NFC applications) **Shielding Material:** Multiple-layer copper-nickel alloy mesh **Chip Integration:** Embedded passive shielding technology (no battery required) **Effective Range:** Complete protection for cards within 2mm of blocking surface **Durability:** 10,000+ bend cycles without performance degradation *Note: These technical parameters are reference data. For exact specifications, please contact our backend management team.* ## Real-World Effectiveness and Limitations In my opinion, RFID blocking cards provide substantial protection against casual scanning attempts but shouldn't be considered absolute security solutions. I've successfully used my TIANJUN RFID blocking card to prevent unauthorized scans at crowded conferences and public transportation hubs. ### Entertainment Industry Applications Interestingly, RFID blocking technology has found unexpected applications in the entertainment in