Add-on dossier
A linkable lifecycle record for hardware expansions, app ecosystems, firmware upgrades, cases, radio parts, and post-event badge experiments.
The Safe Mode badge was a real cassette tape in a jewel case, with side A/B markings, label art, and audio content that formed part of the challenge.
Badge context
Independent writeup source documenting the lanyard, cassette tape, liner-front, liner-back, character-color puzzle, and challenge timing.
Archived DEF CON Safe Mode page source for the in-person cancellation, August 6-9 online event context, optional Human Plus support model, and official cassette-badge announcement.
InfoconDB source for DEF CON 28 virtual location, August 6-9, 2020 dates, free general admission, and official conference links.
Contemporary Hackaday source documenting the physical cassette, jewel case, lanyard, liner notes, tones, number-station-like audio, and collaboration project.
DEF CON forum source proving badge purchase/support context, LosT creator attribution, challenge surfaces, and media.defcon.org cassette-content availability.
Source trail
Challenge writeup source for lanyard, cassette, liner-front, liner-back, color-character puzzle observations, and puzzle-start timing.
Official forum source for badge creator LosT attribution, cassette/lanyard/liner challenge scope, and media-server availability for cassette contents and liner notes.
Event archive source for Safe Mode cancellation/online-event context, Human Plus support framing, and the official announcement that the badge was a LosT-created cassette tape.
Contemporary source for the physical cassette badge, jewel case packaging, lanyard characters, liner-note clues, audio tones, number-station-like opening, and Hackaday.io collaboration context.
Event metadata source for virtual location, August 6-9, 2020 dates, free general admission, and official DEF CON 28 links.