Mission Darkness Faraday Bag

Overview

A Mission Darkness Faraday bag is a signal-blocking pouch that isolates whatever you put inside from all wireless signals — cellular, Wi-Fi, Bluetooth, GPS and RFID. It works by wrapping the contents in conductive fabric that forms a Faraday cage, so a phone inside can't be tracked, pinged or remotely wiped, and an NFC or Bluetooth device can't be reached over the air. Made by MOS Equipment, these bags are widely used in security, forensics and privacy contexts.

For a Bitcoiner, the uses are practical. You can fully air-gap a phone or a wireless-capable hardware wallet during sensitive operations, block a car's keyless-entry fob from relay attacks, or store devices where you want zero remote reachability. The build is solid and the shielding genuinely blocks the listed bands. The honest caveats: it's a physical shield, not a security cure-all — it does nothing once the device is out of the bag, seams and closures must be sealed properly to work, and shielding fabric can wear over time. Prices start around $30 and scale with size.

Buy it if you want to physically isolate a device from all wireless signals — for air-gapping, travel privacy, or defeating fob relay attacks. It complements, rather than replaces, good key management and device hygiene.