Faraday Bag – How to keep others from tracking your mobile phone

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Faraday bag
Faraday bag - Photo credit: Mission Darkness

As a private investigator, you are very aware of how relatively easy it is to track someone’s location. For instance, placing a GPS tracking device on someone’s vehicle (in states where it is legal to do so). Then, using tracking software to monitor the movements of that vehicle. Similarly, investigators can use mobile spy software to track the location (and other activity) of a mobile phone. So, given the relatively simple process of tracking others, how does a PI prevent someone from tracking them? That’s where a Faraday bag can help.

What is a Faraday Bag?

A Faraday bag prevents radio waves from entering or escaping from an electronic device. For example, some hackers install viruses, malware, or other software on phones via a Wi-Fi signal. Often, the device is a mobile phone, tablet, or laptop computer. However, other devices such as car key fobs, garage door openers, smart watches, credit cards, etc.

The outer material is usually made of ballistic-grade nylon. On the inside, there are multiple layers of high-shielding Titan RF fabric. Typically, they are water-resistant, but not waterproof.

Who Uses Faraday Bags?

Although Faraday bags sound like something reserved for a special ops agent, anyone can use them. However, they are often used by the military, government, and law enforcement officials. In addition, corporate executives use them to prevent the theft of corporate information while traveling. Also, private investigators can use them to keep someone from tracking their mobile devices.

What kind of signals do they block?

Although the quality and functionality of the bags may differ by manufacturer, most bags block:

  • Radio waves
  • Bluetooth signals
  • Wi-Fi
  • Cellular signals, including 5G
  • GPS tracking signals
  • Electromagnetic field (EMF) reduction
  • Radio Frequency Identification (RFID) tags (such as

Different Types of Bags

Small Bag: Mission Darkness Non-Window Faraday Bag

This bag is a military-grade bag made of ballistic nylon that is water resistant (not waterproof). Inside, there are two layers of high-shielding TitanRF Faraday Fabric. It blocks WiFi signals, Bluetooth, cell signals, GPS, RFID, and radio signals. In regard to capacity, it has plenty of room for multiple cell phones, credit cards, and more.

As of this writing, the item is the highest-rated bag on Amazon. It has a rating of 4.7 out of 5 stars from more than 4,500 customers.

Medium Bag: Non-Window Faraday Bag for Tablets

Also from Mission Darkness, this black, nylon bag is water-resistant. It provides the same signal-shielding capabilities as the smaller bag. However, it has greater storage capacity. This means you can store more mobile devices, or use them for a tablet. In addition, it has a unique serial number to use for asset tracking.

Large Bag: X2 Faraday Duffel Bag with a detachable pouch

Believe it or not, you can get the same RF shielding for your larger electronic devices with this handy duffel bag. Again, you get the same quality protection, this one just has a LOT more storage space. That means you can store multiple laptops, two-way radios, GPS units, or other bulky devices. Plus, the detachable pouch is great for smaller items when you don’t need the whole bag.

This one is a bit more pricey than the small bags. However, you have to consider the value of the information and data you’re protecting.

It has a rating of 4.6 out of 5 stars from more than 200 customer reviews.

Questions and More Information

If you have any questions or comments, please post a message below. If you purchased one of the items above, please let us know what you think. However, please direct any customer service issues to Mission Darkness.

See also: Best Mobile Phone Trackers.

Michael Kissiah is the owner of Brandy Lane Publishing, LLC, which owns and operates a small portfolio of websites, including eInvestigator.com. Michael created eInvestigator.com more than 20 years ago after working as a private investigator in the state of Florida. Since that time, he has become an expert at how to find information online and has written over 1000 articles on topics related to the investigation industry. In addition, he is the author of the "Private Investigator Licensing Handbook", available at Amazon.com.

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