FANACAN Signal Blocking Bag for Car Keys – Car Key Signal Blocking Pouch – 2 Pack Pouch for Keys – Portable 3-Layer Structure Key Blocker for Security and Protection – RFID Key Fob Protecto

Introducing the latest improved version

(1) Radio wave blocking fiber 1 layer → 3 layers: Completely blocking radio waves and improving performance! No radio waves leak!

(2) Radio wave blocking fiber Oxidation resistant surface treatment: It is not oxidized, the radio wave blocking performance does not deteriorate over time, and it has excellent durability!

(3) Ultra-small compact design: Easy to use and comfortable to fit in your pocket!

(4) High quality leather: High quality leather is used for the exterior, and it is fashionable while being waterproof and abrasion resistant! It is a simple design that is easy to match with various coordination!

Difference from conventional products

Spare keys placed at home also take measures to block radio waves!

Even if my home and the parking lot are far apart, the radio waves are amplified and reach. Specifically, it is performed as shown in the above figure. For example, if a smart key is placed in the house, criminal A approaches the house until the weak radio wave of the smart key can be received, where a special device is used to receive the radio wave, amplify it, and transmit it again. .. Next, criminal B receives the radio wave and relays it further. Criminal B may have more than one to retransmit radio waves to the target vehicle. Finally, criminal C near the car unlocks his key, starts the car’s engine and steals it. Even if the smart key is placed in the house, if the leaking radio wave is caught by the relay attack device, the car key will be unlocked, so the spare key placed at home will also be radio wave. Don’t forget to take measures against blocking!