What a Faraday bag is actually for
Three RF-blocking layers isolate a phone from cellular, GPS, Wi-Fi and Bluetooth. That matters in three situations: preventing a seized device from being wiped remotely, stopping location tracking during a sensitive movement, and keeping a device out of a meeting without asking anyone to hand it over.
The MAS Series Faraday Bag for Phones provides robust radio frequency shielding across three dedicated RF-blocking layers, effectively isolating a mobile device from all wireless signals including cellular, GPS, Wi-Fi, and Bluetooth. This multi-layer construction ensures that a phone stored inside cannot send or receive transmissions, preventing remote tracking, unauthorized data access, and potential evidence tampering during transport or storage.
Trusted by law enforcement, digital forensics professionals, and privacy-conscious individuals, this bag is an essential tool for preserving device integrity at crime scenes, during covert operations, or in everyday carry situations where location privacy is a concern.
- Three-layer RF shielding for enhanced signal attenuation over single-layer alternatives
- Blocks cellular, GPS, Wi-Fi, and Bluetooth transmissions simultaneously
- Preserves digital evidence by preventing remote wipe or data modification
- Suitable for daily privacy use and professional field or forensic applications
How to use it so it works
Shielding only works when the bag is closed correctly. Roll the closure the full number of turns the maker specifies and seal it; a single fold leaves a gap at the seam and the phone reconnects. Test it the first time: put the phone inside, seal it, call it from another line and confirm it does not ring, then check for missed-call notifications when you open it.
Two practical notes. A sealed phone burns battery hunting for signal, so charge before a long isolation. And shielding fabric wears at the fold line — inspect it periodically and re-test rather than assuming a bag bought two years ago still performs.
Where we use them
Seizing a device for examination, transporting evidence, protecting a principal’s phone during a sensitive meeting, and keeping key fobs out of range of relay theft. In forensic work the point is not privacy, it is integrity: an isolated phone cannot receive a remote wipe, and that is the difference between evidence and a story about evidence.
If the device in the bag matters to a case, hand it to an examiner sealed and untouched — our examiners image devices with the chain of custody documented from the moment they arrive.
