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Faraday Bags

Faraday Bags – Signal Blocking Protection for Phones, Keys and RFID Devices

OzSpy has supplied privacy and counter-surveillance equipment in Australia since 1998. Faraday bags are one of the most practical tools available for protecting devices from wireless tracking, hacking and unauthorised scanning.

What Is a Faraday Bag?

A Faraday bag, also known as a signal-blocking or RFID-blocking pouch, is a specially engineered enclosure lined with conductive metallic fabric. When a device is placed inside and the bag is properly sealed, it blocks incoming and outgoing wireless signals.

Faraday bags are designed to shield against:

  • Mobile networks including GSM, 4G and 5G
  • WiFi and Bluetooth
  • GPS tracking signals
  • RFID signals used in credit cards, passports and access cards
  • General electromagnetic interference

The name originates from scientist Michael Faraday. Modern Faraday bags function as portable Faraday cages, isolating devices from external radio frequency communication.

Why Use a Faraday Bag

Privacy protection – Prevent smartphones or tracking devices from transmitting location data.

Protection against remote access – Block wireless communication pathways used in certain hacking or exploitation scenarios.

RFID theft prevention – Reduce the risk of unauthorised scanning of contactless cards and electronic passports.

Vehicle key fob security – Help prevent relay attacks targeting keyless entry systems.

Devices That Can Be Shielded

Our range includes Faraday pouches suitable for:

  • Mobile phones and tablets
  • Laptops and portable storage devices
  • Car key fobs
  • Credit cards and passports
  • Specialised signal-blocking wallets and travel pouches

Different sizes and formats are available depending on the level of protection required.

Do Faraday Bags Work

When properly constructed and fully sealed, high-quality Faraday bags effectively block wireless communication. In practical testing, devices placed inside and sealed were unable to receive calls, messages or location updates until removed from the enclosure.

How to Use a Faraday Bag Correctly

  1. Power off the device where possible for maximum assurance.
  2. Place the device fully inside the pouch.
  3. Seal the closure completely using the zip, magnetic or fold-over mechanism.
  4. Store securely while signal isolation is required.
  5. Remove the device and open the pouch when normal operation is needed.

Important: For reliable signal isolation, ensure the bag is fully sealed with no gaps along seams or closures. Improper sealing may reduce effectiveness.

Materials and Construction

Effective Faraday bags use an internal conductive lining typically woven from copper or silver-based fibres. This metallic layer reflects and absorbs radio frequency signals. The outer layer is usually constructed from durable fabric for everyday use, while the inner lining provides the shielding capability.

Who Commonly Uses Faraday Bags

  • Business travellers
  • Journalists and investigators
  • Security-conscious individuals
  • Vehicle owners using keyless entry systems
  • Anyone concerned about digital tracking or RFID skimming

Browse Faraday Bags in Australia

OzSpy offers a wide selection of Faraday bags, from compact key fob pouches to larger laptop-sized shielding bags. All products ship from within Australia and are supported by experienced technical advice.