Relay attack prevention keychain

This is a key holder that prevents the "relay attack" method of stealing smart key cars.

To protect against electromagnetic waves, it is important to cover and seal the device with shielding fabric.

By placing your keys in the small bag of shielding material provided and then storing them in the pouch, you can double up and increase the radio wave blocking ability.

There is a D-ring on the back.

The electromagnetic wave shielding fabric is made in Japan.

*Please note: To prevent radio waves from entering from outside, it is important to completely cover the key with electromagnetic shielding fabric. Please refer to the usage procedure to seal the key tightly and check the effectiveness each time you use it. Please note that neither our company nor the dealer will bear any responsibility for any damage caused by this product.