Previously: security engineer at Square, co-author of HackLang, put the 's' in https at Facebook. Maker of CTFs.
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I published two articles in PagedOut! Issue #2. PagedOut! is a new spin on the traditional "hacker" ezines. Every issue is filled with very interesting technical topics (covering programming, code golfing, quines, hacking, infosec, retro computers, modern computers, electronics, demoscene, and more). Each issue also features an amazing cover-page artwork. Articles are one page long.
My first article (page 19), An artisanal QR code, explains how to craft a QR code from scratch.
My second article (page 41), 🎃👻🕷 Spooky Fizz Buzz, is a unique implementation of Fizz Buzz, which uses the font engine to render "3" as "fizz", 5 as "buzz", etc.
Hope you enjoy reading both of those articles, as well as all the other amazing content.