Frequently asked questions

Yes. Once a device is sealed inside, NullSignal blocks WiFi, GPS, cellular / 5G, Bluetooth and RFID/NFC. Nothing gets in or out until you open the flap.

Yes — it is the classic use. A key fob sealed inside cannot be detected or relayed, so thieves have no signal to amplify.

Three layers. A microfiber outer shell with a leather-look PU finish, a conductive shielding layer in the middle that reflects and absorbs radio energy, and a soft inner liner that protects both the shielding and your screen. The full-width hook-and-loop flap is what closes the shield — a gap of a few millimetres at one corner is enough to leak a fob signal, which is why the seal runs the whole width.

No. Airplane mode is software and leaves GPS, NFC and key-fob radios active. Physically blocking the signal is the only reliable method.

It fits virtually all modern smartphones (including Pro Max and Ultra sizes), plus one or two key fobs and a stack of cards (8.3 x 4.9 in / 21 x 12.5 cm).

No. It is compact and light — it slips into any bag, glovebox or jacket pocket.

The 6-pack, by a wide margin. Almost everyone counts more key sets than they expected once they look: two cars, a spare fob in a drawer, a partner set by another door, a first car at the grandparents. It works out cheapest per pouch, it covers the whole household in a single order, and the digital handbook is included free.

One per set of keys, plus one for the cards and phone you carry every day. A single pouch protects one set at a time — the fob left in the drawer is still broadcasting, and that is usually the one a relay crew reaches.

Take the largest bundle and keep one pouch with every spare key. Vans, dealer plates and rental fobs sitting together in one room are the easiest target there is, because one relay sweep reaches all of them at once. If you need more than the biggest bundle on the page, message us from the contact page and we will sort the quantity out with you.

Yes, and most people do. Bundles ship as loose pouches, so one goes by your door, one to your parents, one to each of the kids. Nothing is personalised, so there is nothing to set up.

Shipping is free in the U.S. on every order, with tracking.

Orders are dispatched within 1–3 business days. Delivery then takes 5–12 business days, all in business days (Mon–Fri).

We ship to the United States and selected international destinations.

Yes, a tracking number is emailed the moment your order ships, and you can follow it any time on our Track Order page.

Every order is covered by a 90-day money-back guarantee. Seal your fob inside, test it against your own car, and if you are not convinced, return it for a full refund.

Email us for approval, ship the item back with tracking, and we refund 100% to your original payment method once it is received. Full details are on our Refund & Return Policy page.

Contact us within 48 hours with a photo and we send a free replacement — usually with nothing to send back.

Yes. Payments are encrypted and processed by Shopify’s secure checkout. We never see or store your card details.

Major credit and debit cards, PayPal, Apple Pay, Shop Pay and Google Pay.

We only collect what we need to fulfil your order and never sell your personal data. See our Privacy Policy for details.