Faraday pouch buying guide
Updated: 21 October 2026
You keep a passive keyless fob on the hall table, and a spare in a drawer, and you want a lined pouch before you commit to a listing. This Faraday pouch buying guide is the order of those decisions. The [Faraday pouch comparison](/hub/safes-and-secure-storage/faraday-pouch) ranks the twelve amazon.co.uk listings, with shelf prices captured on 19 October 2026 from about £3.59 to about £39.99. Start with the job, then whether the closure will meet over your fob, then a test on the car. Peter F. compared those listings and public guidance from Thatcham Research and UK police. There was no laboratory shield test. A qualifying purchase on amazon.co.uk can earn a commission at no extra cost to you.
You keep a passive keyless fob on the hall table, and a spare in a drawer, and you want a lined pouch before you commit to a listing. This Faraday pouch buying guide is the order of those decisions.
You keep a passive keyless fob on the hall table, and a spare in a drawer, and you want a lined pouch before you commit to a listing. This Faraday pouch buying guide is the order of those decisions. The Faraday pouch comparison ranks the twelve amazon.co.uk listings, with shelf prices captured on 19 October 2026 from about £3.59 to about £39.99. Start with the job, then whether the closure will meet over your fob, then a test on the car. Peter F. compared those listings and public guidance from Thatcham Research and UK police. There was no laboratory shield test. A qualifying purchase on amazon.co.uk can earn a commission at no extra cost to you.
Our top picks
| Badge | Product | Form | Stated size | Closure | Note | Price | Offer |
|---|---|---|---|---|---|---|---|
| Best overall |  Samfolk Samfolk Faraday box and pouch | Hallway box | 16 × 12 × 10 cm | Lid | 8.5 | about £18.99 | View offer |
 lanpard lanpard medium Faraday pouch | Key-fob pair | 9 × 14 cm | n/a | 7.9 | about £3.99 | View offer | |
| Best value |  caslord caslord 2 pack Faraday pouch | Key-fob pair | n/a | Velcro or roll-top | 7.2 | about £3.59 | View offer |
On this page
What you are buying
A Faraday pouch is a soft bag with a conductive lining. It only affects the object that sits fully inside a closed seal. A key-fob pair is for one or two remotes you can pocket. A hallway box sold with pouches, the Samfolk set at about £18.99 with the box stated at 16 × 12 × 10 cm, is a drop point for several keys plus two sleeves for when a key leaves the house. A phone or laptop fabric bag is a sleeve for a bigger device that happens to mention keys. The YourSecure aluminium case at about £39.99 takes one fob up to 80 × 40 × 20 mm. If you only park an ordinary fob overnight, a laptop sleeve is the wrong object. If two forms still look alike, use the Faraday pouch vs box page.
Size and closure
Thatcham Research warns that many pouches are cut for cards and will not close over keys. Measure the fob, including any thick case, before you trust a universal bullet. Stated sizes here are about 9 × 14 cm on the lanpard medium pair at about £3.99, about 11 × 7.5 cm on the small pair at about £6.99, 14 × 9 cm on the WHonor pair at about £7.99, and 13 × 9 cm on the Teskyer pair at about £9.99. The small lanpard listing tells larger keys, including some Teslas, to move up a size. caslord at about £3.59 names Velcro and also appears as a roll-top, and it prints no centimetre size. If a bulky head stops the seal, the lining does nothing. The how to test a Faraday pouch page treats an open flap as a failed test.
Test before you trust it
The Metropolitan Police and Tracker describe the same check, and Thatcham’s keyless guidance matches it. Put the fob fully inside, close the seal, stand by the car, and try the door and the start button. If the car unlocks or starts, the pouch is not doing the job on that vehicle today. A phone that loses signal is an extra check, because the fob uses a different radio. Retest every few months. UK reviews on several cheap pairs say blocking faded after weeks or months, and a worn lining looks the same as a new one. None of these twelve listings shows a British Standard, a UKCA shielding test, or a Secured by Design mark. Warwickshire Police put a starting price around £5 and still tell you to test whatever you buy, including a tin.
Spare keys and hallway habits
A pouch on the key you carry does nothing for the spare by the front door. Thatcham’s relay description is two people, one at the car and one by the house, stretching a challenge of about two metres so the fob replies. Buy a two-pack, or a box that states room for several keys, and put both fobs away when the car is at home. The Samfolk bullets talk about storing several keys in the box and keeping two pouches inside it for trips. A single YourSecure case does not cover a second driver. If someone still drops a fob in a coat by the letterbox, the purchase has not changed the overnight risk. That limit is the keyless car theft and Faraday pouch page.
Fire, water, and legal wording
Several Hodufy and yaokvide listings say fireproof or waterproof. The temperatures named, 1,832°F and 2,000°F, have no BS or EN number in these fields. A fire line is not a document safe, and it is not evidence that the shield works on your car. A listing that says signal jammer, as the Hodufy handle-bag title does, is using the wrong legal word. Ofcom states that using apparatus to interfere with wireless telegraphy is illegal under section 68 of the Wireless Telegraphy Act 2006 unless you are authorised, and Ofcom does not license jammers. A pouch is passive shielding. Ofcom also says no pouch is perfect, and that a microwave will cook the keys if someone starts it. Under the Consumer Rights Act 2015, sections 9 and 11, goods must be of satisfactory quality and must match the description. That route is open if a pouch never blocks your car. It is not a promise that a listing will pass your test.
Common questions
Do I need a pouch or a box?
You need a pouch if the fob leaves the house in a pocket or a bag, and a box if several keys sit in one place by the door overnight. The Samfolk listing at about £18.99 tries to do both: a box stated at 16 × 12 × 10 cm plus two pouches. A single aluminium case covers one fob only.
Will a card-sized sleeve fit my fob?
Often it will not. Thatcham warns that many pouches are sized for cards and will not close over keys. Use the centimetre lines where they exist: about 9 × 14 cm, 11 × 7.5 cm, 14 × 9 cm, or 13 × 9 cm. The small lanpard listing tells larger keys, including some Teslas, to move up a size. If the listing prints no size, as caslord does not, you are guessing until the flap either meets or it does not.
Must both keys go in pouches?
Yes, if both fobs can unlock the car. A spare on a hook by the front door is enough for the relay layout Thatcham describes, with one person at the car and one by the house. One pouch on the key you carry, and a second fob left out, leaves that path open. Put the spare in the second pouch or in a closed hallway box the same evening you test the first one.
Are fireproof bags certified?
Not on the evidence in these twelve listings. Hodufy bullets name 1,832°F and 2,000°F, and yaokvide titles say fireproof, without a BS or EN number in the fields. Treat that as marketing copy. It does not make the bag a document safe, and it does not tell you whether your car stays locked. Judge the bag by the car test, then decide whether you needed a large sleeve at all.
Does price predict how long a pouch lasts?
Not in this set. UK reviews on several cheap pairs say blocking faded after weeks or months, and the dearer bags and the about £39.99 case are not accompanied by a durability standard either. Warwickshire Police mention pouches from about £5 and still tell you to test. Retest every few months whatever you paid. A low price is a reason to try a two-pack, and still a reason to run the check by the car.
Can I use a phone test instead of the car?
No. A phone that drops signal shows the bag is doing something to that handset. It does not show that your fob has stopped answering the car. Stand by the vehicle with the fob sealed inside, try the door, and try the start button. If either works, the pouch has failed for that key today. Repeat the same check every few months, because a worn lining does not look different from a new one.
Related pages
Sources
Public UK sources used for this comparison. Listing prices, stars and review counts are the amazon.co.uk figures saved for this set on 19 October 2026.
- Thatcham Research: how to increase your car security (retrieved 19 October 2026)
- Thatcham Research: what is keyless entry and start? (retrieved 19 October 2026)
- Metropolitan Police: preventing car and vehicle theft (retrieved 19 October 2026)
- Ofcom: radio spectrum and the law (retrieved 19 October 2026)
- Ofcom: can a microwave thwart car thieves? (retrieved 19 October 2026)
- This is Money: Tracker warning on cheap Faraday pouches, 22 August 2024 (retrieved 19 October 2026)
- Consumer Rights Act 2015, sections 9 and 11 (retrieved 19 October 2026)
- Warwickshire Police: keyless vehicle theft (retrieved 19 October 2026)