DEF CON
The 2017 DEF CON edition whose official badge was documented by attendee feedback as a rubber or plastic identity artifact without a badge challenge, while the wider event became a milestone year for unofficial badgelife hardware.
Caesars Palace, Las Vegas, Nevada · United States · 2017
A DEF CON 25 official admission badge recorded in DEF CON feedback as a rubber or plastic identity badge, not an electronic puzzle board, paired historically with an unusually large wave of unofficial DEF CON 25 hardware badges and badge-maker coordination.
The AND!XOR DC25 Badge was an unofficial DEF CON 25 badgelife board built around a Rigado BMD-300 / Nordic nRF52 module, color TFT, WS2812B LEDs, sensors, microSD, BLE smartphone integration, TCLish scripting, BYOB bling, CHIP8/SCHIP games, and a badge-to-badge BOTNET game.
Lifecycle
The BYOB log documents using the microSD card for custom RAW 16-bit 565 bling assets, including ffmpeg conversion and the `/SDCard/BLING/` folder workflow.
The scripting log documents TCLish language support plus badge-specific graphics, LED, button, timing, file, and GPIO commands for day-one badge hacking.
The BOTNET log describes a badge-only wireless game where activated badges could act as badge-net repeaters while players managed services, firewalls, exploits, points, XP, and attacks against other AND!XOR badges.
Hackaday documented thousands of custom DEF CON 25 hardware badges, a badge-maker meetup, and shared API work among makers, making the simple official badge historically important by contrast.
The project page and postmortem document a Rigado BMD-300 module based on Nordic nRF52 with ARM Cortex-M4F, 512 KB flash, 64 KB RAM, integrated antenna, Nordic S132 SoftDevice, TFT display, WS2812B LEDs, sensors, and microSD.
DEF CON forum feedback describes the standard DEF CON 25 badge as a rubber or plastic admission artifact rather than a powered electronics platform.
The smartphone-integration log documents the AND!XOR Android app terminal, Nordic nRF Toolbox compatibility, nearby badge scanning, BLE terminal commands, script buttons, and maintenance-mode behavior.
Attendee feedback explicitly called out the lack of an official badge challenge, so the record treats DEF CON 25 as a non-puzzle standard-badge year.
Operational history
The entry remains image-free rather than copying attendee or press photography without provenance.
The record remains source-backed and image-free rather than copying article/project images, screenshots, video frames, generated art, placeholders, or uncleared media.
The compendium avoids adding imaginary hardware to a year whose badge significance is partly the contrast with unofficial electronic badgelife.
The record cites the available project logs and model archive while avoiding stronger open-hardware/source-code claims until the missing repository or an archive mirror is recovered.
The compendium preserves the community hardware lineage without confusing it with the official DEF CON 25 rubber/plastic identity badge.
The catalogue records the game mechanics without implying a real-world botnet or harmful network capability beyond the badge ecosystem described by the project owners.