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Expert guides to Faraday bags, EMF shielding, and RF protection. Independently researched product reviews, testing tools, and home protection strategies.
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Faraday Bags
Signal-blocking bags for phones, laptops, key fobs, and forensic evidence. Tested for RF attenuation and real-world use.
EMF Testing Tools
RF detectors, spectrum analyzers, body voltage meters, and smartphone adapters to measure EMF exposure in your home.
Shielding Materials
Conductive paints, Faraday fabrics, window films, and shielding sheets for whole-room or whole-home EMF protection.
Shielding Clothing
EMF-blocking shirts, pants, beanies, scarves, aprons, and headwear. Wearable protection for daily life.
Shielding Bedding
Mattress toppers, pillowcases, baby blankets, and bedroom design guides for healthier sleep environments.
Faraday Fabric
How RF-blocking fabrics work, which materials perform best, and how to test shielding effectiveness at home.
Most Popular Guides
The Complete Guide to Faraday Bags
Everything you need to know about Faraday bags: how they work, what to look for, and which bags actually block signals. Our most comprehensive guide.
Faraday Bag for Car Keys: Stop Relay Attacks
Thieves can amplify your key fob signal from inside your house. A Faraday pouch blocks relay attacks for under $15. Here is what to buy.
EMF Protection for Your Home
A room-by-room guide to reducing EMF exposure at home. Covers Wi-Fi routers, smart meters, bedroom shielding, and grounding techniques.
EMP and Solar Storm Preparedness
How to protect electronics from EMP events and solar storms using Faraday bags and cages. Practical prepping without the hype.
RF Attenuation Charts Explained
What dB ratings actually mean, how to read shielding effectiveness charts, and why some “Faraday” products barely block any signal.
Designing a Shielded Bedroom
Step-by-step guide to creating a low-EMF sleep environment. From shielding paint to bed canopies, every layer explained.
Free EMF Quick-Start Kit
Get our beginner’s guide to reducing EMF exposure at home. Includes a room-by-room checklist and product recommendation sheet.
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Frequently Asked Questions
What is a Faraday bag?
A Faraday bag is a pouch or case lined with conductive material that blocks all wireless signals (cellular, Wi-Fi, Bluetooth, GPS, NFC) from reaching a device inside. It works on the same principle as a Faraday cage, creating an electromagnetic shield. Learn more in our complete Faraday bag guide.
Do Faraday bags actually work?
Yes, quality Faraday bags block 99.9%+ of wireless signals when properly sealed. The key factors are the shielding material (look for 60+ dB attenuation), proper closure mechanism (roll-top or velcro with overlap), and construction quality. Low-cost bags with poor seals often leak signal. Our RF attenuation guide explains how to evaluate claims.
What does EMF stand for?
EMF stands for Electromagnetic Field. EMFs are invisible energy waves produced by electrically charged objects, including power lines, Wi-Fi routers, cell phones, and household appliances. Our EMF protection overview covers the basics of exposure and reduction strategies.
How can I test EMF levels in my home?
You can measure EMF using dedicated RF meters, tri-field meters, or smartphone adapter kits. Professional-grade meters like the TriField TF2 cost $150-200 and measure electric, magnetic, and radio frequency fields. Budget options start around $30 but measure fewer field types. See our testing tools guide for recommendations.
Do I need a Faraday bag for my car keys?
If your car uses keyless entry (push-button start), yes. Relay attacks allow thieves to amplify your key fob signal from inside your home to unlock and start your car in the driveway. A Faraday pouch blocks this signal for under $15 and takes seconds to use. Our car key Faraday bag guide covers what to buy.