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The best seasonal allergy medicine is … and here is the proof

It's actually not a medicine. It's better: It's an air filter. Over 30 years of allergies, and two continents, no allergy doctor ever mentioned air filters to me, but it makes all the difference in the world. And has no side effects, other than a little bit of noise and a little bit of electricity…

Simple Notes on RSA encryption with Python’s Cryptography module

I might as well publish my notes. First, about RSA: You need three numbers and calculate the rest. p and q must be (large) primes. They need to be secret. e needs to be chosen so that a certain function (that indirectly depends on p and q) evaluates to 1. e becomes public. You calculate…

Desirable qualities for home IoT systems

My post on Lowe's killing off their home IoT product, Iris, kicked off an expert-level social media discussion on how IoT systems "ought" to be. Here's a summary of what people said, grouped by subject, plus some implications. I figure it might be useful to keep this around for myself, and others, so I am…

What could local network services for the Indie IoT look like?

Peter Hoddie calls for (local area) networking services to enable the Indie IoT -- an excellent direction of inquiry. Let's explore what implications this has. [As for context, I have been using the term "Indie IoT" to describe a so-far aspirational Internet of Things that is controlled by the owners of IoT devices, not by…

Notes on Postgresql authentication

My notes on what I learned, so I can re-read them when I need to. And because they might be useful for somebody else, too, I post them here. Architecture: Completely unlike MySQL, Postgresql authentication is (can be) related to the Linux user accounts on the system. By default, after a fresh installation, at least…