Key case to prevent relay smart radio wave car theft prevention relay attack radio wave blocking key smart key birthday compatible with all car models

[Relay Attack] In a relay attack, a special receiver is used to pick up the weak radio waves that are constantly emitted from the smart key, and then the receiver is used as a relay to transmit radio waves to the car. The car mistakenly believes that the instructions are coming from the smart key, so it unlocks and starts the engine. [Prevent relay attacks] Simply place the smart key in the radio wave blocking case to completely block the key's radio waves. Effectively prevents car theft from the smart key's radio wave relay. The best way to prevent relay attacks. [Radio wave blocking key case] The back layer of radio wave blocking fabric is doubled to enhance the radio wave blocking effect and product durability. Radio waves from smart keys are immediately blocked. [Easy car theft prevention] The pouch is designed in a case shape, can hold one smart key, and is easy to insert and remove the smart key, making it convenient to carry. Compatible with all types of models such as Toyota, Honda, Nissan, Mazda, Suzuki, and Subaru. Please read before purchasing. *Please note: It is not possible to insert the key of the new 40 series Alphard. Thank you for your understanding. [Excellent design] Abrasion-resistant, high-quality PU, copper zipper, elegant appearance and color design make it a great gift or for your own car security. [Inner dimensions: 8x4.2x2cm] [Peace of mind guarantee] If the smart key radio wave blocking product sold by our company is scratched, broken, or defective, please contact our customer service center. We will respond to your satisfaction by exchanging or re-shipping the product, or by returning or refunding the product. Please rest assured. Key case to prevent relay attacks, smart key, radio wave blocking, car theft prevention device, compatible with all vehicle models, a relay attack uses a special receiver to pick up the weak radio waves that are constantly emitted from the smart key, and then uses the receiver as a relay point to transmit radio waves to the car, which mistakes the instructions as coming from the smart key, unlocks the car, and starts the engine.