FWR Faraday bag car keyless entry guard

FWR Faraday Bag for vehicle keyless system remote controls is a compact shielding pouch designed for the secure storage of keys and remote controls with a keyless entry function. It helps protect the vehicle against misuse of the remote control signal, for example during a so-called relay attack, where attackers try to amplify or transmit the key signal and unlock and start the vehicle without physical damage.

Thanks to its shielding construction based on the principle of a Faraday cage, the pouch effectively limits wireless communication between the stored remote control and its surroundings. If the key is stored inside a properly closed bag, the risk that its signal will be captured, amplified, or misused to unlock the vehicle is significantly reduced.

Main benefits:

• protection of keys and remote controls for vehicles with keyless unlocking,
• reduced risk of vehicle theft or break-in by amplifying the remote control signal,
• compact size suitable for everyday use,
• durable material for frequent use,
• suitable for home use, travel, and company fleets,
• technology based on professional FWR Faraday bags,
• internal dimensions 7,5 × 12 cm, suitable for most keyless remote controls.

Why protect a keyless remote control?

Modern vehicles with keyless unlocking are convenient, but their remote controls constantly communicate with their surroundings. If the key is placed, for example, at home by the door, on a shelf, in a handbag, or in an office, its signal may in some cases be misused using a device that captures it and transmits it toward the vehicle.

Thieves can then unlock the vehicle, break into it, or, in some models, even start it without having to break a window or damage the lock. A Faraday bag helps prevent this scenario by shielding the stored remote control from surrounding signals.

How is the pouch used?

Use is simple. Just place the key or remote control into the Faraday bag, close it carefully, and store it in a safe place. The pouch is small, lightweight, and suitable for everyday use at home, at work, and while travelling.

What fits inside the bag

The internal dimensions of 7,5 × 12 cm are suitable for most standard remote controls and keys for vehicles with keyless unlocking. Before purchase, we recommend comparing the dimensions of your remote control with the internal dimensions of the pouch.

FWR Faraday Bag for vehicle keyless system remote controls is suitable for:

• storing keys for vehicles with a keyless entry system,
• protecting the remote control at home, for example overnight,
• safe storage of keys in an office or hotel,
• travel,
• car rental companies and fleet managers.

Technical parameters:

• internal dimensions: 7,5 × 12 cm,
• closure type: Velcro,
• intended use: remote controls and keys for vehicles with keyless unlocking,
• maximum measured attenuation: up to 60 dB,
• testing: according to ASTM D-4935-2010, IEEE Standard 299-2006, and MIL-Standard 285.

For maximum effectiveness, we recommend placing the entire remote control inside the bag, closing it carefully, and verifying before use that the pouch is properly closed. The measured attenuation values of Generation 2 according to ASTM D-4935-2010, IEEE-Standard 299-2006, and MIL-Standard 285 can be found here.

You can learn more about the risk of misuse of keyless systems here:

• ADAC: Keyless: Leichte Beute für Autodiebe
• Forbes: Vulnerability In Car Keyless Entry Systems Allows Anyone To Open And Steal Your Vehicle
• NY Times: Keeping Your Car Safe From Electronic Thieves
• SFIST: Thief Hacks Car s Keyless Entry To Steal $15,000 Bike In Sausalito
• FinanceTwitter: Here s how a $17 gadget breaks into your car s keyless entry system
• AFR: Why keeping your car keys in the freezer may protect you from digital thieves
• Ars Technica:New York Times columnist falls prey to signal repeater car burglary
• Jalopnik: Tech Blogger Says He Watched As Youths Wirelessly Broke Into His Car
• NICB: Thieves Caught on Camera Using Mystery Device to Unlock Vehicles
• Business Insider: Power Amplifiers Helping Car Thieves

Frequently Asked Questions (FAQ)

What is a Faraday bag for keyless remote controls used for?

A Faraday bag for keyless remote controls is used to shield a vehicle key or remote control from surrounding wireless signals. It helps reduce the risk that the remote control signal will be captured, amplified, or misused to unlock the vehicle.

What does the bag protect against?

The bag helps protect against misuse of the keyless remote control signal, for example during a so-called relay attack. When properly closed, it limits communication between the remote control and its surroundings.

Will the car respond to a key stored inside the bag?

When the bag is properly used and closed, the vehicle should not normally respond to the stored remote control. That is the purpose of the pouch — to limit communication between the remote control, the vehicle, and the surroundings.

How do I know the bag works?

Place the remote control inside the bag, close it carefully, and try approaching the vehicle with it or unlocking it in the usual way. The vehicle should not respond to a remote control stored in a properly closed bag.

Is the bag suitable for everyday use?

Yes. The pouch is small, lightweight, and flexible, so it is suitable for everyday key storage at home, at work, and while travelling.