The GoDark® Faraday Sleeve for Laptops (Large) is a premium signal-blocking pouch designed to completely isolate laptops and similarly sized devices from all wireless communication, including cellular, Wi-Fi, Bluetooth, GPS, and RFID signals. Constructed with GoDark’s tested multi-layer Faraday shielding material, the sleeve creates a reliable electromagnetic dead zone around your device, preventing remote access, tracking, data exfiltration, and unwanted signal interception.
Trusted by law enforcement, investigators, digital forensics professionals, and privacy-conscious individuals, this sleeve is ideal for transporting seized devices, protecting sensitive evidence integrity, or simply ensuring your laptop cannot be remotely compromised while in transit or storage.
- Blocks cellular, Wi-Fi, Bluetooth, GPS, and RFID signals
- Preserves digital evidence by preventing remote wipe commands
- Durable, portable design suitable for field and travel use
- Compatible with standard and large-format laptops
The large sleeve, and when the size is the reason
The large format exists for machines that do not fit a standard sleeve: fifteen- and sixteen-inch laptops, mobile workstations, gaming machines with substantial cooling, and rugged field laptops with protective cases that add real bulk. It is also the right choice when a device travels inside a padded case that you do not want to remove every time it is shielded.
Size selection is not cosmetic here. A Faraday enclosure works through the integrity of its seal, and a device that fills the sleeve to its limit makes a proper roll-and-fold closure awkward. Awkward closures get made carelessly, and a careless closure is a gap. Buying one size up so the seal can be made cleanly is a better decision than buying the tightest fit.
Measure, do not infer
Screen class is a poor proxy for physical dimensions. Manufacturers differ substantially in bezel size, thickness and footprint, and a nominally smaller thick machine can exceed a nominally larger thin one in every dimension that matters.
Measure length, width and thickness of the actual device, add any case or protective sleeve you keep it in, and compare against the internal dimensions in the specification above. Then leave headroom for the closure.
What shielding buys you
Sealed inside, the machine cannot reach cellular, Wi-Fi, Bluetooth or satellite positioning, and nothing outside can reach it. That is a physical property of the enclosure, not a setting the operating system enforces — which is the whole point, because software states can be overridden by management policy, by a compromise, or by an update.
The situations that justify it are consistent: preserving a machine as evidence so it cannot be wiped remotely or altered by synced deletions; transporting a device through environments where it leaves your direct control; removing a microphone and camera from a sensitive discussion; and controlling when a device is reachable for anyone whose work attracts adversarial attention.
Closing it properly, every time
Roll the closure the specified number of turns and press firmly along the entire width. Corners are where seals fail — check that both ends are fully compressed rather than merely folded over. On a large sleeve there is simply more seam to get wrong, so take the extra few seconds.
Then verify. Leave the machine connected to a network, seal it, and confirm from another device that it has dropped off; on a machine with cellular, confirm that a call or message does not arrive. Repeat the test every few months and after any period of heavy use. Conductive fabric degrades where it is creased repeatedly, and the failure is silent — a sleeve that no longer shields looks exactly like one that does.
Expect two behaviours. Battery drains faster inside, because a device searching for an unavailable network transmits harder. And the machine reconnects and reports as soon as it is unsealed, so choose where you open it deliberately.
Field and travel use
A large sleeve is often bought for travel, and a few habits make it worth carrying. Seal the device before you arrive somewhere rather than after. Keep the sleeve accessible rather than at the bottom of a bag, because a shield you have to dig for is a shield you skip. And remember that the sleeve protects reachability, not physical security — a shielded laptop left in a hotel room is still a laptop left in a hotel room, and full-disk encryption with a strong passphrase is the control that matters if it is taken.
If the device is evidence
Shielding is one step in a chain that has to hold together. Document who collected the machine, when, from where, and everyone who has held it since. Do not browse it to “just check something” — every interaction changes state and gives an opposing party something to argue about. Do not power it up or down outside a controlled process, because both can trigger encryption behaviour, scheduled tasks and logging that complicate a clean acquisition.
Seal it, document it, and hand it to someone who performs acquisitions properly. Our digital forensics team handles imaging, analysis and reporting to a standard that survives scrutiny, and incident response covers the case where the machine is part of an active compromise.
Care and replacement
Store it loosely, not folded flat under other gear. Keep chargers with exposed pins, sharp tools and abrasive items out of it. Avoid leaving it in a hot vehicle. Inspect the closure surfaces for wear and the body for punctures — a hole in the conductive layer is a hole in the shield whether or not it is obvious.
Retest on a schedule. These are long-lived consumables rather than permanent equipment, and the only way to know one has stopped working is to check.
The boundary
A Faraday sleeve controls reachability while the device is sealed inside it. It does not remove malware, repair a compromise, protect a cloud account that anyone with the password can reach, or substitute for encryption. Within its scope it is absolute; outside it, it does nothing at all — and knowing which is which is what makes it useful.
