Signal blocking Faraday bags by SecurityBase – protect against hackers and unwanted signals, with double lining , extended seal and proven durability
Large Phone Faraday Bag
$23.95
Whether you have a large phone or use a thicker protective case, our Large Phone Faraday Bag keeps your device fully shielded. At 12 × 22 cm, it offers 35% more space than the standard size, providing complete signal blocking without compromising fit or portability.
- Fits all larger smartphones - 12 x 22 cm
- Strong signal blocking - incl 4G/5G, Wifi, Bluetooth, GPS & NFC
- Also available in standard size - 10 x 19.5 cm
How the Large Phone Faraday Bag works
This Large Phone Faraday Bag is engineered with dual-layer signal-blocking fabric to completely shield your device from wireless communication. Once placed inside, your phone is instantly disconnected from all networks — blocking cellular signals (3G, 4G, 5G), GPS, Wi-Fi, Bluetooth, RFID, and NFC.
Designed as a signal-blocking bag for larger phones, it creates a secure Faraday cage that protects against remote hacking, unauthorised tracking, and data interception — even when the phone is switched on.
Using it is simple: slip your device into the inner sleeve, fold the flap closed, and your phone is locked down with no power source, apps, or settings required.
Perfect for anyone looking for a large mobile phone signal blocker, privacy pouch, or Faraday case for secure travel, this large signal-blocking pouch gives you peace of mind and reliable protection from wireless threats.
Effective Protection
with <0.05 Ω resistance and 85 dB+ shielding performance
Trusted Australian Brand
endorsed by cyber security experts
Full-Spectrum Shield
blocks 4G, 5G, WIFI, RFID, RF, Bluetooth & GPS
Warranty & Service
2-year warranty and local customer service
Signal Blocking Bags - FAQ
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A Faraday bag blocks wireless signals by surrounding your device with a specially designed shielding material. When sealed inside, the device cannot send or receive signals such as Bluetooth, Wi-Fi, GPS, NFC, or mobile data, helping protect against tracking, hacking, and unauthorised access.
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Our Faraday bags are build for excellent signal blocking performance, featuring a double copper-nickel woven mesh laminated to a polyester substrate. This advanced material delivers a surface resistance below 0.05Ω and a shielding effectiveness exceeding 85 dB.
These specifications meet requirements associated with military-grade EMP protection, particularly the MIL-STD-188-125 standard.
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A signal-blocking bag improves security and privacy by preventing your device from sending or receiving wireless signals. When sealed inside, it helps stop tracking, remote access, data transmission, and unwanted connectivity — keeping your device private, secure, and fully offline.
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A car key signal blocker bag prevents car theft by blocking the radio waves emitted by key fobs, making it impossible for thieves to use a technique called a "relay attack." This is how it works:
Keyless Entry and Relay Attacks
- Modern cars often use keyless entry systems, where a key fob transmits a radio signal to unlock the car when you're nearby.
- Thieves can exploit this system with a relay attack. They use two devices; One intercepts the weak radio signal from your key fob near your house (often through windows or walls). The second device, placed near the car, amplifies the intercepted signal and transmits it to the car, tricking it into unlocking as if the key fob is right there.
Car Key Signal Blocker
- When you place your key fob inside the bag, the radio waves it transmits get disrupted.
- The electrons in the metal mesh move in response to the waves, creating a current that opposes the original signal.
- This opposing current weakens or cancels out the radio wave from the key fob inside the bag.
Essentially a Silent Zone for Your Key Fob
- With the signal blocked, the thief's device outside cannot receive or amplify the key fob's signal.
- The car's receiver never "hears" the signal, preventing it from recognizing the key and unlocking.
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No, you cannot use the car key when the key is in the Faraday pouch. They are designed to provide maximum protection against signal cloning or interception in all scenarios, even when a scanner is nearby.
To use your car key, e.g. to open or start the car, simply remove the key from the pouch. The included keychain makes this easy while the key stays attached to the pouch.
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Turning a smartphone off doesn’t always fully disconnect it. Some wireless components can remain active in low-power modes, even when the phone is switched off or in airplane mode. This allows features like device-finding and background signal activity to continue.
For complete privacy and security, a Faraday bag physically blocks all wireless signals, preventing communication.
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For maximum signal blocking:
- Place your car key, phone, tablet or other device inside the inner compartment lined with Faraday fabric.
- Ensure the Velcro closure is fully sealed, with the Faraday lining double-folded for complete signal isolation.
- Avoid overfilling the bag or pouch, as a tight, uninterrupted seal is essential for effective protection.
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Yes, we do. We supply Faraday Pouches for wholesale, corporate, and bulk orders. Please contact us with your requirements, and we will provide pricing and lead times.
Signal-blocking pouches by SecurityBase
Trusted signal-blocking protection, built for everyday use.
Developed to deliver reliable security and privacy without complexity.
Signal-Blocking Shielding
Our Faraday bags use a double copper-nickel woven mesh to effectily block wireless signals, helping prevent tracking, remote access, and data transmission.
Slim. Secure. Everyday-Ready.
Designed to fit neatly into bags, backpacks, and glove boxes, our Faraday pouches protect your devices without adding bulk.
Protection for More Than Phones
Ideal for phones, car fobs, tablets, and other wireless devices; anywhere privacy and security matter.
