Mission Darkness Faraday Bag for Keyfobs (2-Pack)
Cheap, lab tested fob pouches that block relay theft, if you check them for wear.
We bought Faraday Box for Car Keys + 2 Faraday Key Fob Bags, RFID Signal-Blocking. It's no longer documented anywhere, so this page reviews the closest well-covered match. It is a well documented two pack of key fob Faraday bags doing the same anti relay job at a similar price, without the storage box.
The short version
- Owners of cars with keyless entry and push button start
- Households with two sets of fobs to protect
- Anyone who wants to carry a shielded fob rather than leave it in a box by the door
- You want a hard box to drop keys in at home; a metal fob box is easier for that
- Your fob is unusually large, since the pouch interior is only 4.5 x 3 in
- You will not take the fob out and put it back every time you drive
What owners like
- Lab certified shielding from a brand also sold to forensics and law enforcement users
- Low price for two bags
- Small and easy to carry, with useful loops for keys or a belt
Common complaints
- Fabric can wear after weeks or months of repeated opening, which can weaken the seal
- Only fits key fobs and other small items
- Taking the fob in and out every trip gets tedious for quick errands
Based on The Mission Darkness maker page, a Practical Preppers retailer listing, a Nerd Techy Faraday bag roundup, a Best Faraday Bags brand review and a Ram TRX owners forum thread on fob pouches..
Research scores
Scored from the maker's specs and what owners report. Drew's own notes and photos will refine these.
Ownership
- Feb 2024
First bought.
Drew's hands-on notes for this product are on the way. Long-term updates will be added to this timeline.
What it does
A pair of small signal blocking pouches that hold a car key fob so thieves cannot relay its signal to unlock or start the car. This page covers it in place of the unbranded Faraday box and bag set, which has no readable documentation.
- Blocks the fob signal that relay attack thieves try to boost
- Two bags, so each driver or each set of keys gets one
- Belt loop on the back and a keyring loop for a carabiner
- Also holds access cards, credit cards, small phones or a smartwatch
- Slim enough to carry in a pocket
A good pick if you want lab tested fob pouches from an established Faraday brand at a low price, with two bags for two sets of keys. The trade-off is that the fob only works once you take it out, and the fabric can wear with daily opening, so it is worth testing the bag now and then.
How it compares
Specs
- In the box
- 2 bags, each with its own serial number
- Internal space
- 4.5 x 3 in (11.4 x 7.6 cm), fits two fobs or one fob with keyring
- Closed size
- 5 x 3.25 x 0.25 in (12.7 x 8.3 cm x 6.4 mm)
- Shielding
- Three layers of TitanRF Faraday fabric, dual paired seams
- Exterior
- Water resistant ballistic nylon
- Closure
- Fold and tuck with elastic band
- Stated blocking
- About 90 dB average from low MHz to 40 GHz, covering WiFi, Bluetooth, cellular including 5G, GPS, RFID and NFC
- Test standards
- MIL STD 188-125 and IEEE 299-2006
Worth knowing
- The maker states the device must be completely inside the bag with the top folded and tucked to be isolated.
Questions
Does a Faraday bag stop keyless car theft?
It is designed to block the fob signal so a relay attack cannot pick it up and pass it to the car. The fob has to be fully inside with the top folded and tucked.
Will my car unlock with the fob in the bag?
No. The bag blocks the fob, so it has to come out before the car will see it.
How many fobs fit in one bag?
The maker says two fobs, or one fob with keyring accessories.
How do I know it still works?
Put the fob inside, seal it and try to unlock the car up close. Owner forums suggest checking now and then, since worn fabric pouches can stop blocking.
Sources
- MOS Equipment: Mission Darkness Faraday Bag for Keyfobs (2-Pack)
- Practical Preppers: Mission Darkness Faraday Bag for Keyfobs
- Nerd Techy: Best Signal Blocking Faraday Bags for Key Fobs, Smartphones, Tablets
- Best Faraday Bags: Mission Darkness Review
- Ram TRX Forum: Key fob sized faraday pouch?
Researched 2026-10-02. We bought this product; our page is built from the maker's details and what owners report across reviews and forums. We never copy Amazon customer reviews.