DEF CON 19 · United States · 2011

DEF CON 19 Badge

Titanium non-electronic puzzle badge

A Ryan Clarke / 1o57 DEF CON 19 badge that intentionally stepped away from electronics and used a waterjet-cut commercially pure titanium physical artifact as the event credential, puzzle surface, role marker, and social-interaction prompt.

DEF CON United States Titanium Non-Electronic Badge Puzzle Badge Ryan Clarke 1o57 LosT Las Vegas North America

EventDEF CON 19

SeriesDEF CON

LocationRio Hotel & Casino, Las Vegas, Nevada

CountryUnited States

Image Provenance

Asset: optimized WebP crop from licensed documentary video frame
Status: licensed original video-frame derivative
Source: Welcome & Making of the badge
License: Creative Commons Attribution 3.0 Unported
Attribution: Jeff Moss / The Dark Tangent, LosTboY, DEF CON, via TIB AV-Portal
Notes: Original 640x320 frame extracted at 00:18:26 from the CC BY 3.0 TIB AV-Portal recording of the DEF CON 19 Welcome & Making of the badge talk and preserved in Public/images/source. The public WebP asset is a metadata-stripped crop limited to the talk-slide badge collage that shows real DEF CON 19 titanium badge variants; it is not generated content, a placeholder, an attendee scrape, or an uncleared social-media photo. The published badge.gallery delivery file is an optimized WebP generated from the rights-cleared local derivative/source with metadata stripped, WebP quality 82, and a maximum side cap of 1600 pixels when the source is larger; upstream source URL, license, and attribution remain unchanged.

People

Authors & Credits

CC BY licensed talk video host

TIB AV-Portal

TIB AV-Portal publishes the DEF CON 19 Welcome & Making of the badge recording with CC BY 3.0 license metadata; the catalogue uses a timestamped frame as image provenance.

Source

DEF CON founder and badge-direction collaborator

Jeff Moss / The Dark Tangent

LosT's forum note says the non-electronic badge decision followed talks with DT, Kingpin, Russ, and others.

Source

badge designer and puzzle author

Ryan Clarke / 1o57 / LosT

The official DEF CON 19 program badge section is signed Ryan 1o57 Clarke, and InfoconDB lists Ryan Clarke / LosT on the badge-making talk.

Source

event and media publisher

DEF CON Communications

Publisher of the official DEF CON 19 event page, program PDF, and media-server archive used for the record.

Source

Why It Mattered

It fills the 2011 DEF CON lineage gap and records an important design correction: after several electronic years, the official badge was deliberately made non-electronic so more attendees could engage with puzzle, observation, and interaction mechanics rather than only hardware hacking.

Hardware

The official DEF CON 19 program says the badge was made from 0.040-inch commercially pure titanium, cut by waterjet from stacked sheets, deburred by tumbling, antiqued or oxidized in an industrial kiln around 1000 degrees, and produced in the United States. The number of badge designs was intentionally not disclosed, beyond being much larger than the standard Goon, Press, Vendor, Contest, Speaker, Human, and Uber role set.

Software & Apps

No software or firmware is claimed for the standard badge. Public badge-talk metadata and forum posts frame the badge as a non-electronic object carrying clues, hints, mini-puzzles, and the beginning of a weekend challenge rather than code, microcontrollers, LEDs, batteries, or firmware releases.

Lore

LosT's pre-event forum note explained that the badge would not be electronic and described the badge's jobs as admission/security token, curiosity engine, and participation device. The program invited attendees to find variants, solve easy-to-hard mini-puzzles, and treat the badge plus surrounding event material as clues.

Lifecycle

Add-ons & Upgrades

event challenge historical

Non-electronic puzzle reality game

The badge and surrounding event materials carried clues, hints, mini-puzzles, easter eggs, and the start of a weekend challenge rather than firmware or electronics.

Compatibility: DEF CON 19 Badge

Source

physical badge artifact source-backed

Waterjet-cut titanium credential

The official program describes 0.040-inch commercially pure titanium pieces fabricated by waterjet, tumbled for deburring, and kiln-oxidized for an aged puzzle-game appearance.

Compatibility: DEF CON 19 Badge

Source

social interaction mechanic documented

Badge-as-participation design

LosT's forum note framed the badge as a security token, curiosity device, and conference-participation prompt meant to get attendees interacting without the time burden of the Mystery Challenge.

Compatibility: DEF CON 19 Badge

Source

Operational history

Issues & Camp Impact

image provenance note

The DEF CON 19 image uses a 00:18:26 frame from the TIB AV-Portal / DEF CON recording of Welcome & Making of the badge under CC BY 3.0, cropped to the talk-slide collage of real titanium badge variants.

The entry now has a rights-cleared documentary video-frame derivative without copying attendee photos, generated art, placeholders, or all-rights-reserved gallery media.

Confidence: TIB AV-Portal license metadata and exact frame timestamp
Status: licensed video-frame replacement applied
Timeframe: current catalogue build
Source note: TIB AV-Portal media 40642 license metadata, CC BY 3.0, DEF CON talk metadata, and badge.gallery image policy.

non-electronic scope note

DEF CON 19's standard badge is modeled as a non-electronic titanium identity and puzzle artifact because official sources explicitly say the year moved away from electronic badges.

The catalogue avoids MCU, firmware, LED, battery, and circuit claims for 2011 while still preserving the badge's physical fabrication and puzzle significance.

Confidence: primary program and forum sources
Status: documented
Timeframe: DEF CON 19 badge pass
Source note: DEF CON 19 program and LosT's DEF CON forum repost.

variant inventory gap note

The official program says the number of badge designs was intentionally not released and was much larger than the standard role set, but this pass does not reconstruct every physical variant.

The record preserves the existence of hidden variants without overclaiming a complete catalog of DEF CON 19 badge shapes.

Confidence: official program source
Status: needs deeper artifact inventory
Timeframe: current DEF CON 19 pass
Source note: DEF CON 19 program badge section.

Resources

DEF CON 19 event archive event page · Official DEF CON source for August 4-7, 2011 Rio Hotel and Casino event framing. DEF CON 19 event metadata event page · InfoconDB source for DEF CON 19 dates and Rio Hotel & Casino, Las Vegas venue metadata. DEF CON 19 program program · Official program source for non-electronic badge rationale, titanium material, waterjet fabrication, kiln oxidation, role variants, clue surfaces, and Ryan 1o57 Clarke credit. On the Defcon 19 Badge official forum note · DEF CON forum repost where LosT states the badge was not electronic and explains the security-token, curiosity, participation, and interaction goals. Welcome & Making of the badge video licensed talk video · TIB AV-Portal recording with CC BY 3.0 license metadata, DEF CON publisher metadata, creators Jeff Moss and LosTboY, and talk-slide frames showing actual DEF CON 19 titanium badge variants. Welcome - Making of the badge talk record · InfoconDB source naming the DEF CON 19 badge-making talk and Ryan Clarke / LosT presenter attribution.

Sources

DEF CON: DEF CON 19 Hacking Conference Retrieved 2026-05-15 · Official event archive source for DEF CON 19 event framing, dates, and Rio Hotel location. DEF CON: DEF CON 19 program Retrieved 2026-05-15 · Official program source for the non-electronic badge decision, titanium material, waterjet fabrication, kiln oxidation, variant secrecy, puzzle framing, and Ryan 1o57 Clarke authorship. DEF CON Forums / LosT: On the Defcon 19 Badge Retrieved 2026-05-15 · Primary forum source stating that the DEF CON 19 badge was not electronic and explaining badge goals around admission, curiosity, participation, and social interaction. InfoconDB: DEF CON 19 (2011) Retrieved 2026-05-15 · Event-context source for August 4-7, 2011 dates and Rio Hotel & Casino venue metadata. InfoconDB: Welcome - Making of the badge Retrieved 2026-05-15 · Talk metadata source for Ryan Clarke / LosT badge-making presenter attribution. TIB AV-Portal / DEF CON: Welcome & Making of the badge Retrieved 2026-05-15 · CC BY 3.0 licensed video source for the badge-making talk; a 00:18:26 frame is used only for image provenance after cropping to the talk-slide badge collage.