JitsPack Faraday Certification: Tested, Logged, and Traceable
Every JitsPack Certified Faraday product is tested in a controlled RF harness—not just a “turn the router on and see what happens” smoke test. We measure Wi-Fi, Bluetooth, and cellular signal strength (RSSI, in dBm) with the device outside the bag, then again with the bag fully sealed. The difference between those two readings is the shielding attenuation, expressed in decibels (dB) as:
Our T&E software then cross-checks those measurements against the standard free-space path loss (FSPL) model for the same distance and frequency, using:
This math lets us verify that the RSSI we see in the lab matches what physics says it should at different distances—so we know we’re measuring the bag, not a weak tower or a noisy room. From those runs we assign a JitsPack Faraday Shielding Rating (FSR I–VII). Only bags that land in the target band earn the JitsPack Certified seal and a unique serial number tied back to their test data. (For the armor-plate crowd: think of it like body armor levels—higher FSR generally means more isolation.)
Signal isolation for Wi-Fi, Bluetooth, and cellular is measured and logged in the JitsPack T&E stack.
Mechanical abuse, zipper cycles, load, and flex tests are recorded alongside RF performance.
Each certified unit’s serial number is tied to its configuration and Faraday Shielding Rating (FSR) in a downloadable PDF test report.
Verify your JitsPack Faraday bag
Every bag is serialized and certified after rigorous testing. Enter your serial number to download its official PDF certification.
The Vanguard
Flagship modular EDC platform with integrated Faraday protection and self-locking zippers.
How We Measure Shielding
All testing is done in decibels (dB), using the same math RF engineers use to design radios and antennas.
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Step One: Baseline vs. sealed measurements
RSSI, or Received Signal Strength Indicator, is a measurement of the power of a wireless signal received by a device. For each frequency band we record/measure:
- Baseline RSSI – signal strength with the device outside the faraday enclosure
- Shielded RSSI – signal strength with the device inside the faraday enclosure
Both are measured in dBm (decibels relative to 1 milliwatt).
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Step Two: Shielding effectiveness
Shielding effectiveness is just the drop in signal:
But what is a decibel(Db)?
- 10 dB ≈ 10× power reduction
- 20 dB ≈ 100×
- 30 dB ≈ 1,000×
- 40 dB ≈ 10,000×
We also log packet loss for Wi-Fi/Bluetooth and connectivity state for cellular (connected / marginal / no service) in addition of to other other testing factors (hardware ratings, models, and even weather!)
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Step Three: Serial, QR & Stamp
Once certified, each and every Faraday bag gets a unique serial number along with it’s very own certification report.
Only those that meet the target FSR (Farday Shielding Rating) get to market. So rest assured the thing you’re wearing can be traced back to the very same RF curves and abuse tests we used when we decided it was good enough to ship.
Faraday Shielding Rating
Look—antenna theory and all the weird things photons do at different energy levels is not something you should ever have to worry about. Our nuclear engineers already did that for you.
So instead of throwing equations at you, we built our own rating scheme that feels familiar: Body-Armor-Style Protection Levels… but for your signals.
Photons do some wild stuff, especially around high-powered emitters like cell towers and Stingray devices. We’re straight with you about that. At the quantum level, a photon’s very position is a probability field. That means even with the best shielding in the world, there’s always a tiny chance something sneaks through.
That’s why the only gear you should trust is gear that’s been individually tested, not just “designed to spec.” We test our stuff one unit at a time—so you don’t have to think about quantum anything when you’re out in the real world.
| FSR Level | Attenuation (dB) | Effectiveness (Wi-Fi & Cellular) |
|---|---|---|
| FSR I | < 20 dB | Light shielding. Wi-Fi usually starts to struggle once you’re >10 ft from the router. Cell signal is basically normal unless you’re already in a weak-signal area. Sufficient to prevent RFID skimmers while traveling. |
| FSR II | 20–30 dB | Partial shielding. Wi-Fi connections tend to drop when you’re >5 ft from the router. Cell signal is softened, mainly noticeable when the tower is a couple miles away. |
| FSR III | 30–45 dB | Strong shielding. Wi-Fi is effectively blocked once you’re about 2+ ft from the router. LTE/5G starts dropping off when the nearest tower is >0.5 miles (0.8 km) away. |
| FSR IV | 45–60 dB | Very strong shielding. Wi-Fi dies within inches of the router. Cell coverage from typical urban towers becomes unreliable to nonexistent. |
| FSR V | 60–80 dB | Exceptional shielding. Wi-Fi stays blocked even with the bag touching the router. Very high isolation from most macrocell towers and high-power emitters with common/standard antenna configurations (i.e., perfect unless someone is trying to beam you with a highly directed antenna— and even then this will probably still do the job). |
| FSR VI | > 80 dB | “Serious Shielding” territory. Nearby Wi-Fi and cell towers may as well not exist and the shielding is guaranteed to be bulky. You can even expect your electronics to shrug off the lightning strike… even if you’re a bit crispy afterward. |
| FSR VII | Classified / “are you okay?” | Peak isolation. No Wi-Fi, no cell, no nothing. This is “look at me, I still have an iPod during the apocalypse— and I’m doing it in style” — built for when the grid goes weird and you absolutely do not want to be seen. Let’s be honest: you’re not walking around chatting with people in that underground bunker of yours anyway… and that’s the level of sophistication it would take to get us to FSR VII. Cheaper to go on offense. Damn… its weird down here. |
PLEASE NOTE: None of our products can help you if you insist on being a dumbass