The best Faraday pouches and boxes — and how to prove yours works
Any dual-layer pouch that passes the door-handle test works — the brand matters far less than testing it on arrival and then on the first of every month, because these fail silently and a dead pouch looks exactly like a working one. A pouch per keyholder costs under a tenner; add a box for the hallway if you want the habit to stick.
Ranked by evidence, not by commission
Ad — we make money from some picks below. Where a pick links to a retailer, they pay us a commission if you buy, at no extra cost to you. Where a pick is something we stock ourselves, we say so on the card and we make a margin instead. The ranking is set before any link is added and it is not for sale — which is the only part of this that should matter to you.
Links open a search rather than one listing, because stock and prices change daily. We hold no stock of these and take no payment for placement.
The criteria — and what we don't do
- ✓Dual-layer shielding fabric only — single-layer pouches weaken with daily flexing
- ✓The only rating that matters is your own test: key inside, stand beside the car, pull the handle. Locked door = working pouch. Ten seconds, do it on arrival and quarterly.
- ✓Replace yearly with daily use — the lining fatigues before the fabric looks worn
- ✓Prices indicative at publish (August 2026). No placement fees, no stock held.
Police forces consistently report relay attacks among the leading methods for stealing modern cars — the pouch is the £10 counter to the whole technique. Full problem-and-solution guide: Faraday key pouch / box.
Before you buy
How do I know if my Faraday pouch has stopped working?
Repeat the door-handle test: key in the pouch, stand at the car, try the door. If it opens, the lining has failed — replace it. Phones make a second check: a phone sealed inside shouldn't ring.
Does my car need one?
If it unlocks when the key is near without pressing anything, yes — it's relay-attackable. Our vehicle crime pages show how concentrated theft is around residential streets; the pouch removes your car from the method entirely.
Are metal tins as good?
A sealed metal tin can work but leaks signal at the lid seam and no one keeps testing it. Purpose-made dual-layer pouches seal properly and fold shut the same way every time — and they cost a tenner.
Related on Swift Assist
Faraday key pouch / box
Relay theft is the fastest-growing way cars are stolen in Britain — and it is completely defeated by a signal-blocking pouch on your hallway table. The catch nobody mentions: pouches wear out silently, so we show you how to check yours still works.
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