Faraday pouch vs box
Updated: 21 October 2026
You are choosing where the fob sleeps. A Faraday pouch vs box decision follows the habit you already have: a key that leaves in a pocket needs a pouch, and keys that pile up by the door need a box with a lid that actually shuts. Peter F. set the sizes and prices below from the amazon.co.uk listings in the [Faraday pouch comparison](/hub/safes-and-secure-storage/faraday-pouch), captured on 19 October 2026. He did not run a laboratory comparison of fabric against metal. A qualifying purchase can earn a commission at no extra cost to you. The same car test applies to a pouch, a lined box, a rigid case and a biscuit tin.
You are choosing where the fob sleeps.
You are choosing where the fob sleeps. A Faraday pouch vs box decision follows the habit you already have: a key that leaves in a pocket needs a pouch, and keys that pile up by the door need a box with a lid that actually shuts. Peter F. set the sizes and prices below from the amazon.co.uk listings in the Faraday pouch comparison, captured on 19 October 2026. He did not run a laboratory comparison of fabric against metal. A qualifying purchase can earn a commission at no extra cost to you. The same car test applies to a pouch, a lined box, a rigid case and a biscuit tin.
Our top picks
| Badge | Product | Form | Stated size | Where it lives | Note | Price | Offer |
|---|---|---|---|---|---|---|---|
| Best overall |  Samfolk Samfolk Faraday box and pouch | Hallway box | 16 × 12 × 10 cm | By the door | 8.5 | about £18.99 | View offer |
| Best value |  caslord caslord 2 pack Faraday pouch | Portable pouch | n/a | Pocket or hook | 7.2 | about £3.59 | View offer |
 YourSecure YourSecure aluminium Faraday case | Rigid case | 80 × 40 × 20 mm | One pocket | 5.2 | about £39.99 | View offer |
On this page
A portable pouch
A pouch is the form you can carry. In this set the key pairs run from the caslord two-pack at about £3.59 to the Teskyer pair at about £9.99, with stated sizes of about 9 × 14 cm, 11 × 7.5 cm, 14 × 9 cm and 13 × 9 cm where the listing gives them. You drop the fob in, close the flap, and the bag goes in a coat. That is the right tool when you need the shield on the journey as well as overnight. UK reviews say a sealed fob keeps the car quiet, and they also say the block faded after weeks or months. Thatcham warns that many pouches are cut for cards. A bulky fob, or a key the small lanpard listing tells you to size up for, turns a pouch into an open sleeve. Closure details are on the Faraday pouch buying guide.
A hallway box plus pouches
A hallway box is a fixed drop. The Samfolk listing at about £18.99 states a box of 16 × 12 × 10 cm sold with two pouches, and the amazon.co.uk line is 4.6 from 13,508 reviews. The bullets describe keeping several household keys inside and using the pouches when a fob leaves the house. That pattern matches two drivers better than a single pocket sleeve. The lid left open is a bowl, and the fobs inside answer the car. UK themes also include fading and a set some buyers found smaller than expected, so check 16 × 12 × 10 cm against your keys. There is no British Standard or Secured by Design mark on this listing. It is the top pick for a door-side drop, and a clumsy thing to carry to work. If you commute with the fob, you still need one of the pouches, tested on the car.
A rigid aluminium case
The YourSecure case, from eStocker Trading Ltd, is about £39.99, anodised aluminium, limited to one fob up to 80 × 40 × 20 mm. Four amazon.co.uk reviews mention a sealed block, fading and an awkward closure. That is a thin file next to a two-pack with thousands of reviews. The case suits one slim fob you want in a pocket without a fabric flap. It does not replace two pouches, and it is not a hallway box. A fob thicker than 20 mm will not match the stated shell. At more than ten times the about £3.59 pair, you are buying stiffness and a millimetre limit you can check with a ruler. Skip it for a family key bowl. Consider it for one pocket when the spare already has its own pouch.
A metal tin
Warwickshire Police say you should test any tin you use as well as a pouch. A biscuit tin can be the hallway box you already own if the lid closes over the fobs and the car stays locked when you stand at the door. A tin left ajar, or a lid that rocks, is not a shield. Ofcom’s warning about the microwave is not permission to use the oven: a microwave can cage a fob and will cook the keys if it is started. Retest the tin every few months, because a dented lid changes the gap. A tin is a poor daily carry next to a 55 g WHonor pouch, and a fair overnight home for two fobs if the test passes.
Choose by how the keys actually move
Match the container to the hour you are worried about. If the fob is in your pocket all day, start with a two-pack that states a size your key can close inside. If both fobs land by the front door at night, a box or a tested tin is the better primary, with pouches for the trip. If you want one rigid shell for a slim fob and you already shield the spare, the aluminium case is the narrow fit at about £39.99. Large Hodufy sleeves at about £12.98 and about £18.89 are for a laptop or a phone. Their fire temperatures have no BS number here. Use the best Faraday pouch page for named picks with skip conditions. An open container and a spare on the hook undo the rest.
Common questions
Is a box better for two family cars?
It is, when the keys come home to one place. The Samfolk set states a 16 × 12 × 10 cm box plus two pouches at about £18.99, so each driver can take a pouch and the spares can stay in the closed box. Two separate pouches also work if nobody needs a shared drop. A single aluminium case does not cover two cars. Test each fob. One pass does not speak for the other key.
Can I carry a hallway box in a pocket?
No. A box stated at 16 × 12 × 10 cm is a shelf object. Carry a pouch from the same set, or a key pair sized around 9 × 14 cm or 14 × 9 cm, when the fob leaves the house. The box is for the hours the keys are indoors. Putting it in a bag and leaving the lid unfastened removes the point of paying for it.
Does an aluminium case replace two pouches?
It replaces one pouch for one fob up to 80 × 40 × 20 mm. YourSecure at about £39.99 does not cover a spare or a second driver. Keep a second pouch or a box for the other key. Four reviews are a small sample, so the car test matters more than the star line. If your fob is thicker than the stated depth, the case is the wrong form.
Is a biscuit tin enough?
It can be, if you test it the way Warwickshire Police describe for any tin. Lid shut, fob inside, car does not unlock or start when you stand at the door. Retest every few months. A tin that does not close fully is not enough, however heavy the metal feels. It is an overnight tool, not something you hang on a keyring.
Do boxes fail when the lid is left open?
Yes. An open lid, on a lined box or a tin, leaves the fobs able to answer the car. The shield is the closed cavity, not the brand on the outside. If the household will not shut the lid, a pouch each person must close when they come in is the more honest buy. The Samfolk pouches exist for the trip. They also work as the backup when the box stays open.
Which is easier to retest?
The pouch, because you can walk to the car with it in your hand and try the door in a minute. A box or a tin means carrying the fob out in the container, or testing at the door and then returning it. The Metropolitan Police ask for a retest every few months either way. Put the reminder on a calendar.
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)