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FobGuard® security pouch: Ideal Faraday Cage to Protect Car Keyless Entry Fobs

Protect your car and its contents with a FobGuard® security pouch - a high quality "faraday cage" fob pouch proudly made in the USA. Buy one for each of your key fobs.

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Did you know that while you're sleeping, at work or shopping, thieves can open and even operate your car without breaking into it?

Did you know they can do it using your keyless entry fob using a "signal amplification attack"? Yes, that same fob you thought was "safe" on your bedside table, in your pocket, or even on your desk can have its signal stolen and used by a thief up to 1,000 feet away to open and in many cases drive away with your car.

"hundreds of thousands of vehicles in driveways and parking lots today remain open to the wireless theft method" - WIRED

It sounds infuriating, but thieves using a signal amplifier made from cheap, readily available parts can simply walk up to your car, open the door, steal your belongings, and then leave the car without any evidence of tampering. Try explaining that to your insurance company. Depending on your car model, they can drive it away too. 

It's easy to ensure you are never a victim. Our "Military Spec" FobGuard® security pouch can save you thousands of dollars in uninsurable contents loss or worse the loss of your whole car. Just put your keyless entry fobs inside a FobGuard® pouch when you're not using them and your car is protected.

This problem is getting worse and it's not going away. The devices used to do this are becoming easier to buy, cheaper to make and more powerful every day. There is no known solution except to put your key fob inside a faraday cage you can trust to protect you, and FobGuard® brand security pouches are the best there is. Buy a FobGuard® pouch today for each of your fobs.

Just look at the tsunami of news reports about this problem:

  • TODAY: Mystery device lets criminals steal your car in seconds
  • WIRED: Just a Pair of These $11 Radio Gadgets Can Steal a Car
  • DAILYMAIL: Thieves steal Mercedes while keys sit on the kitchen table
  • USA TODAY: This device lets thieves steal your car
  • Wired: Radio Attack Lets Hackers Steal 24 Different Car Models
  • 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
  • AFRWhy 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
  • JalopnikTech Blogger Says He Watched As Youths Wirelessly Broke Into His Car
  • NICBThieves Caught on Camera Using Mystery Device to Unlock Vehicles
  • Business InsiderPower Amplifiers Helping Car Thieves

  • Thieves operate in pairs and take the faint whisper from the key fob in your house, work or on your person, and then amplify it to make it heard by your car as if it was right in their hands. Here's how it works:

    1. The first thief "listens" for your fob signal. They might follow you into a store or cafe, or move next to the wall of your house.
    2. This thief "amplifies" or "relays" the signal to an accomplice who is standing next to your car, up to 1,000 feet away!
    3. Your car thinks your fob is next to the car and the doors open instantly. If your car has push button start, they can drive it until they turn the engine off. 

    It's that easy for them, unless your fob is protected. Buy a FobGuard® security pouch today.

    You don't need to put your car keys in your freezer, but you do need to protect your keys with a keyless entry fob "faraday cage".

    • 100% effective, patent pending design
    • Specific design for automotive keyless entry fobs
    • Tough sports nylon on the outside ready for every day wear and tear
    • High tech faraday cage on the inside, up to 100db attenuation*
    • Independently tested, German military grade materials
    • Same product now used by rental car companies for their car lots
    • Small, light, flexible and unobtrusive - easy to carry in your pocket
    • Money back guarantee
    • 90-day product warranty

    This small, lightweight, flexible and durable "faraday cage" is popular with car owners, rental car companies and replacement remote key manufacturers to stop their keyless entry fobs from being remotely accessed.

    There has been a steady increase in the number of thefts of vehicles and their contents in recent years as the technology to manipulate keyless entry devices has become cheaper and easier to obtain.

    FobGuard® security pouches are manufactured from the highest quality materials. A double layer of German military grade ultra high specification conductive silver/copper/nickel material is first stitched together. Then we wrap the faraday cage in a further layer of tough sports nylon to protect it from daily wear and tear. Finally it's sealed using conductive hook and loop in the mouth. This ensures your device is completely enveloped inside a true "faraday cage".

    The material has an average shielding effectiveness of -85dB in the range of 30 MHz to 1 GHz and an average -80dB in the range of 1 GHz to 11 GHz.

    FobGuard® pouch features


    Field tests have shown 99.99% average signal attenuation. Customer testimonials prove that our design and materials outperform the competition. These pouches are built to last and can be reused over and over again with minimal shielding degradation. Buy a FobGuard® security pouch now for each of your fobs.


    • Interior Dimensions: 3 1/4” Width x 4 1/4” Length
    • Construction: Double Layer Inside Single Strip Closure
    • Material: Double layer conductive silver/copper/nickel RoHS compliant material made in Germany, protected by high durability sports nylon
    • Attentuation: Average shielding effectiveness of -85dB in the range of 30 MHz to 1 GHz and an average -80dB in the range of 1 GHz to 11 GHz. Material has been tested by an independent lab to Mil. STD. 285.
    • Suitable for: Electronic Car Keys, RFID Devices, Credit Cards

    *Tested in accordance with Modified Mil. Std. 285


    ADAC (Germany's foremost automobile association) testing the attack (in German)

    Der Marsch team demonstrating the attack (also in German)

    Protect yourself and get yourself the tried and tested solution - buy a FobGuard® security pouch now!