You don’t need to be a spy to benefit from operational security. Here’s a practical OPSEC guide — threat modeling, data hygiene, signal management, and the honest truth about what products can and can’t do for people who just want to stop leaking information everywhere they go.
The phone test from Dispatch #004 tells you if a Faraday bag works. These advanced methods tell you how well it works, at which frequencies, and whether it’s degrading over time. SDR testing, spectrum analysis, and DIY attenuation verification for anyone who wants real numbers.
Not all shielding materials are equal. Here’s how aluminum, copper, nickel, silver, and conductive fabrics compare on conductivity, skin depth, durability, and cost — the reference table for anyone evaluating electromagnetic shielding.
A tinfoil hat is the perfect gift for the person who questions everything. Here’s how to choose the right tier for every occasion — and what each one says about the person giving it.
Silver-fiber beanies certified to IEEE 299-2006, a standard designed for enclosures with all dimensions greater than 2 meters. A hat is not 2 meters. MIT found aluminum helmets amplify 2.6 GHz by 30 dB on a human head. No manufacturer has published bidirectional product-level testing of their hat on a head. The fabric works. Whether the hat works on a human head, in either direction, is a question that is 134 years old and still open.
Five tiers. One system. From subtle daily wear to maximum cognitive defense — here’s the field guide to every TINFOIL collection, who it’s for, and what you’re actually buying.
The market for Faraday bags is full of products that look right, feel right, and don’t actually block signal. Here’s the engineering behind real shielding — and the five-step test you can do with your phone right now.