When the grid stops, the library doesn’t.
A sealed, shielded case with a real library inside — field manuals, medical references, offline maps, and a small AI that answers your question and cites the book and page it came from. No internet. No login. No expiry date.
The version you can actually ask a question
Most “offline prep” is a drawer full of PDFs you have never opened. That is a filing cabinet, not a library. The difference between knowing first aid and being able to find first aid at 2 a.m. with no power is about four seconds of search.
So we did not build a bigger filing cabinet. We built three things you cannot download:
- An enclosure that has actually been measured. Fabricated aluminium, welded seams, a continuous conductive gasket, a bolted flange lid — and a per-unit attenuation test sheet with numbers on it.
- Media that survives losing an entire drive. Four copies across three media types, one of them printed on paper that has never needed a battery.
- An archive in formats that still open. Plain UTF-8 text with a manifest and checksums. Readable on any computer made in the last forty years, with or without our software.
Three layers. Only one of them is the AI.
The assistant is the interface. The parts that keep working are underneath it.
Plain-text archive
Everything extracted to UTF-8, with a plain-text manifest and checksums. If every other piece of electronics in the house dies, the library is still readable.
Full-text index
A real search index. Works with zero AI, zero GPU, and no electricity beyond a screen. Find “pressure-can venison” in two seconds. This is the layer you will use most.
Local assistant
A small language model that runs on your own machine, reads what the index finds, and answers in plain language — with the citation attached. Nothing leaves the case.
The rule that makes the assistant trustworthy: it cites the book and page, or it says “that isn’t in the library.” It is not allowed to answer a dosing, chemical or temperature question without a quoted source. That rule is enforced in the plumbing, not requested in a prompt — so it will say “I don’t know” more often than you expect. That is the feature.
We’ll say the part other sellers won’t
Every commercial offline library in this category runs free, open software — Kiwix, Wikipedia, Project Gutenberg, public-domain government manuals — and you can download all of it yourself today, for nothing. We encourage it. So we don’t sell you content. We build the parts you can’t download.
| Product | AI performance | Library copies | Shielding | Readable without the app | Price |
|---|---|---|---|---|---|
| COLDSTART ANCHOR | x86 — 30–55 tok/s | 4 (3 media + paper) | Fabricated, measured dB | Yes — plain text | $519–$5,199 CAD |
| Kiwix Hotspot / Preppers bundle | None | 1 | None | No — needs Kiwix | $279–399 USD |
| PrepperDisk | None | 1 (microSD) | None | No — needs Kiwix | $199–280 USD |
| Doom Box | Small model on a Pi — slow | 1 | $20 bag, unmeasured | No | $699–790 USD |
| R.E.A.D.I. Scout | Small model on a Pi | 1 | Unmeasured | No | $199 USD |
| Raw Signal / Survival Expert AI | 24B voice-first / Mac Mini M4 in a case | 1 | Unmeasured | No | $1,995–2,499+ USD |
| Project NOMAD / Internet-in-a-Box | x86, good | Whatever you build | Whatever you build | Depends on you | Free software |
Publicly available information, stated plainly, with prices as observed in September 2026 and converted to CAD where they were quoted in USD. If any row is wrong, tell us and we will correct it.
Note the two rows where a competitor wins. Project NOMAD is free, open source, and runs on the same class of hardware we do — it is excellent, and it is the right answer for someone with a spare PC and a weekend. If that is you, build it. Buy from us if you want a fabricated, measured enclosure and a support path, or if your weekend is already spoken for.
We publish the measurement, not a promise
No one can honestly promise that a device survives a high-altitude electromagnetic pulse. What a seller can do is tell you exactly how much the enclosure attenuates, measured on a bench, at real frequencies, with the method named. That is the whole position.
| Band | What lives there | Measured attenuation | Status |
|---|---|---|---|
| 1 – 30 MHz | HF; long-conductor coupling | pending bench test | published at ship |
| 30 – 300 MHz | VHF; the E1 band that matters most | pending bench test | published at ship |
| 300 – 500 MHz | UHF; seam and aperture leakage | pending bench test | published at ship |
Every unit ships with its own test sheet. Nested aluminium, continuous conductive gasket, bolted flange lid, no conductor crossing the boundary — not a foil bag with a zipper.
Why those three rows say “pending” — and the guarantee that lets you reserve anyway. The bench instruments are paid for by the first four Core Kits. Until the first enclosure is measured there is no number in the table to publish and no number to invent, so we publish none — but reservations for Batch 02 are open now, before that measurement, behind a guarantee you can hold us to: every case ships with its own per-unit attenuation test sheet, and if the assembled enclosure measures below 30 dB anywhere from 1–500 MHz, we refund in full.
We state the bar out loud — 30 dB, 1–500 MHz — so that you can judge whether it is good enough before you pay rather than after. Batch 02 is built after the first enclosure is measured, and the measured dB table is published on this site before any case ships. Your 7-day cooling-off period and the full refund you get if we deliver more than 30 days past the promised date both apply on top of that guarantee.
For context, stated fairly: Mission Darkness publishes a laptop Faraday bag at $153.68 CAD with 80+ dB verified from 1.5–40 GHz. That is a real number from a real test. It is also silent on the low-MHz band where EMP actually couples — which is why our measurement plan targets 1–500 MHz. If we publish a credible figure at 30 MHz and nobody else in the category has measured below 1.5 GHz, that is a comparably honest number in the band that matters.
The three kits
Core Kit
The library and the media, no shielding claim — because there is nothing to prove yet.
- Full 29 GB archive — plain text, checksums, manifest
- Full-text search index
- Small local assistant, runs on your own machine
- 128 GB high-endurance media + USB-C reader
- Printed & laminated quick-reference binder
- Shielded storage pouch
- Documented rebuild scripts — you are never locked in
Shielded Case
Everything in the Core Kit, inside a fabricated enclosure that ships with its own per-unit attenuation test sheet — and a full refund if the assembled enclosure measures below 30 dB anywhere from 1–500 MHz.
- Fabricated aluminium enclosure, gasketed bolted lid
- Individual attenuation test sheet, per unit
- Watertight carry case
- Batch 02 — ships after the first enclosure is measured
Institutional
Three units for a fire hall, church, school or farm co-op, with an install day in your building.
- Three Core Kits, configured and tested
- One enclosure marked for the building’s use
- Install and training day on site
- Group-buy pricing for a congregation or hall
Questions people actually ask
Why not just download Kiwix and the ZIM files myself?
You absolutely can, and we encourage it — the software is free and open. What you cannot download is a fabricated, measured enclosure, a curated core that has actually been read and checked, or a support-and-rebuild path. Buy the parts yourself and you will spend a weekend. Buy this and you will spend a phone call.
Isn’t AI going to hallucinate?
Standalone, yes. This one answers only from the passages the search layer hands it, and it names the book and page. If it cannot find it, it says so. That rule is enforced, not requested.
Why does it cost what it costs?
It is a fabricated metal enclosure with a machined gasket face and a per-unit bench test, plus media and a printed binder. It is not bulk-imported from a warehouse you have never seen. A single unit is over two hours on the machines — cut, formed, gasketed and measured by hand, then shipped with its own test sheet.
What if I’m not a prepper?
Then you are buying the outage version of a fire extinguisher. Cottage, farm, camp, storm week, or a bad Tuesday in February.
Will you still be around in ten years?
The media does not care. Plain text and open formats do not need us to survive — and the rebuild scripts ship with every kit.
What we will never say
| Never | Instead |
|---|---|
| EMP-proof / EMP-proofed | “Measured attenuation: X dB, 1–500 MHz. Individual test sheet included.” |
| Military-grade / mil-spec | “0.8 mm aluminium, welded seams, conductive gasket, bolted flange lid.” |
| Survives a nuclear event | “Designed to mitigate electromagnetic coupling. No product guarantees survival.” |
| FEMA approved / certified | “Includes public-domain FEMA and US Army field manuals.” |
| Medical-grade / doctor-recommended | “Not a medical device. Cited references only.” |
| Unhackable / unjammable | (nothing — we do not make that claim) |
Supplier: Turner Software, a registered business in Ontario, Canada · 590 Halberstadt Circle, Cambridge, Ontario · +1 519-589-1866
COLDSTART ANCHOR is a product line of Turner Software. Pre-order and consumer terms are stated in full on the pre-order page and in the terms. Not a medical device — cited references only. No product can guarantee survival during an electromagnetic pulse or any other emergency; we publish measured performance. Shipped content is public-domain or openly licensed, with attribution and licence texts included on the media.