Why do you need the Faraday Bag? Most keyless fobs carry identification chips that pick up radio signals sent out by their car. The vehicle recognizes the fob when it's in range and unlocks the doors. Keyless ignition systems work in the same way - enabling cars to start when the key fob is detected in the cabin. Criminals can exploit this via a wireless relay attack. Using a radio frequency relay booster, it's possible to pick up and then transmit a key fob signal to trick the car into thinking a fob is present. This enables entry and theft from the cabin or boot - and, in the case of keyless ignition systems, theft of the vehicle itself. Thanks to its signal jamming capability, Lanpard faraday pouch for car keys can completely isolate your fob to make such attacks impossible. About Lanpard Lanpard has anti-theft signal blocking sets. We provide different size car key signal blocker faraday pouches, faraday boxes, and faraday wallets. We have been working on research and development of easier-to-carry, long-lasting, luxury, functionality, stylish, and high-quality signal defender sets. How does the Lanpard Faraday Bag work? Our faraday bag make your cars safe by stopping signals being sent or received by your key fob or any other device containing data. Remove your key from the faraday bag, and signal reception is restored immediately, enabling normal usage.In addition to protecting your car keys, it can also be used to prevent your smartwatch, credit card, etc. from being stolen by others illegal use of RFID scanners and readers to detect your card's RFID signal to protect your personal and financial data. Volume: 1 x Key fob Material: Carbon fiber Color: Black Retail Package includes : 2 x Faraday Bags Attention: Please do not wash the faraday bag, keep the interior dry, or it may lose signal-blocking function. Carbon Fiber Material The outer layer is made of extra premium carbon fiber textured material, waterproof, and stylish. Double Military-Grade RF Shielding The inner layer is made of double military-grade RF shielding cloth, the fully wrapped design offers stronger signal isolation. High-Quality Velcro Strong Velcro is seamlessly bonded, convenient and safe. Upgraded Inner Chain Keyring & Hook A sturdy hook provides you with an additional carrying scheme. You can hang your faraday bag on your waist or on your backpack for easy carrying. The inside key ring let taking the car key out easier. upgraded inner chain keyring & practical hook MORE STRONG, MORE DURABLE Solid Stitching The inner layer is made of extra carbon fiber textured material and doubles military-grade RF shielding cloth with precision stitching, the fully wrapped design offers stronger signal isolation. Block all signal types, RFID, SMS, WI-FI, Bluetooth, 5G, NFC, keyless car, key fob signals, etc. Protecting your car at all times. Compact Size & Portable Easy to carry. Accommodates multiple sizes of keychains and small devices. Includes 2 medium faraday bags in each package so that you can protect your spare key fob or multiple vehicles in your household.