DEF CON 31 Badge
A Mar Williams / spuxo official DEF CON 31 physical badge produced for a deliberately non-electronic year, with the public pre-con badge news centered on a customization-friendly SAO slot and media-server add-on design assets.
DEF CON
DEF CON 31
The 2023 DEF CON edition whose Mar Williams / spuxo official physical badge returned the mainline to a non-electronic format while exposing an SAO customization chamber and public add-on design assets.
Caesars Forum, Flamingo, Linq, and Harrah's, Las Vegas, Nevada · United States · 2023
Lifecycle
Add-ons & Upgrades
DEF CON 31 Badge
source-backed
Non-electronic physical badge format
The official call for badge designers stated that DC31 would return to a non-electronic physical badge after two consecutive electronic badge years.
DEF CON 31 Badge
archived
Official add-on design pack
The DEF CON media server published badge add-on specifications and test-fit assets for building physical customizations around the DC31 badge.
DEF CON 31 Badge
historical
SAO customization slot
DEF CON's badge news previewed the badge through its SAO slot and framed the badge as having room for attendee customization.
Operational history
Issues & Camp Impact
DEF CON 31 Badge
note
No local DEF CON 31 badge image has been added because official news, vendor, media-server, and attendee images have not been paired with a complete reuse basis, attribution string, and processing record for this catalogue.
The entry remains image-free rather than copying official preview images, vendor art, or attendee photography without complete provenance.
DEF CON 31 Badge
note
Public sources document the non-electronic badge plan, creator, SAO slot, and media-server add-on assets, but this pass does not inventory every badge type, physical material detail, Black Badge variant, attendee add-on, or final production artifact.
The catalogue records verified badge lineage and customization surfaces while leaving full physical artifact documentation for a later pass.
Resources
DEF CON 31 badge media-server directory
design assets · Official media-server source for the badge add-on PDF, chamber test-fit STL, badge-card outline AI/EPS files, GIF previews, and Blender chamber asset.
DEF CON 31 event archive
event page · Official DEF CON archive source for August 10-13, 2023 dates, venue context, and event framing.
DEF CON 31 call for badge designers
official call · Official source documenting that DC31 was planned as a non-electronic physical badge year, after two MK Factor electronic years, with production planning up to 30,000 badges plus Black Badge variants.
DEF CON 31 badge news
official news · Official news source documenting the public SAO slot preview, add-on media-server pointer, and thanks to spux as the year's badge designer.
DEF CON 31 vendor profile for Mar Williams
official profile · Official vendor page source stating that Mar Williams is DEF CON's resident artist and created the year's official DEF CON badge.
Making The DEF CON 31 Badge
talk metadata · InfoconDB source for the DEF CON 31 badge-making talk title, timing, duration, and presenter Mar Williams.
Sources
DEF CON: DEF CON 31 Badge News!
Retrieved 2026-05-15 · Official source for the SAO customization slot preview, add-on design-assets pointer, and spux badge-designer credit.
DEF CON: DEF CON 31 Call for Badge Designers
Retrieved 2026-05-15 · Official source for the non-electronic physical badge mandate, MK Factor context, and planned badge production scale.
DEF CON: DEF CON 31 Hacking Conference
Retrieved 2026-05-15 · Official event archive source for DEF CON 31 dates, venues, and conference context.
DEF CON: DEF CON 31 Vendors
Retrieved 2026-05-15 · Official source connecting Mar Williams to the year's official DEF CON badge and identifying their DEF CON artist role.
DEF CON Media Server: DEF CON 31 badge media directory
Retrieved 2026-05-15 · Official source for the add-on PDF, chamber STL, outline AI/EPS, GIF previews, and Blender asset used to describe the badge customization surface.
InfoconDB: Making The DEF CON 31 Badge
Retrieved 2026-05-15 · Talk metadata source for Mar Williams' DEF CON 31 badge-making presentation, date, time, and duration.