Hacker Con Badges

Gulaschprogrammiernacht 23 · Germany · 2025

GPN23 Identity Badge

Printed attendee badge, lanyard, and safeR badge workflow

A source-backed non-electronic GPN23 badge record for the printed attendee badges and lanyard workflow documented by Entropia's FAQ and badge how-to.

GPN Gulaschprogrammiernacht Germany Identity Badge Non-electronic Lanyard safeR Awareness Karlsruhe
EventGulaschprogrammiernacht 23
SeriesGulaschprogrammiernacht
LocationHfG and ZKM, Karlsruhe
CountryGermany

People

Authors & Credits

Badges area owner

Nora

Listed in the GPN23 orga table for the Badges area.

Source

badge how-to author

Luca Lenz

Listed in the page metadata for the badge how-to source.

Source

Why It Mattered

GPN23 shows the mature, low-tech side of hacker-event badge infrastructure: badges as social identity, pronoun/name/DECT surfaces, lanyard reuse, awareness signals, and logistics rather than a PCB.

Hardware

The badge how-to documents ordered paper badges, badge punching, markers, lanyards, and a 105 x 74 mm A7 landscape, 450 g matte double-sided print specification for GPN23. It records that 1300 of 2500 badges and about 600 lanyards were used.

Software & Apps

No badge firmware is source-backed for this record. The relevant systems are operational: registration/capacity control, FAQ guidance, DECT numbers written on badges, and the wiki/orga process for badge design and distribution.

Lore

The FAQ asks visitors to bring or donate lanyards to reduce waste, the awareness page asks people to use names and pronouns written on badges, and the orga page names Badges as the area responsible for participant name signs.

Lifecycle

Add-ons & Upgrades

print/design workflow documented

Hidden-pattern badge design

The badge how-to records a hidden pattern concept in the printed design and preserves print-production details for A7 landscape badges.

Compatibility: GPN23 Identity Badge

Source
role/awareness identity documented

safeR and orga badge variants

The badge how-to and orga notes preserve safeR, orga, participant-name-sign, and area-owner context for different visible badge roles.

Compatibility: GPN23 Identity Badge

Source
sustainability/logistics documented

Lanyard reuse and donation workflow

The FAQ asks visitors to bring a reusable lanyard or donate lanyards so the event can reduce waste while still issuing wearable badges.

Compatibility: GPN23 Identity Badge

Source

Operational history

Issues & Camp Impact

missing rights-cleared image note

No local GPN23 identity-badge image is published because the public how-to, FAQ, awareness, and orga pages document the badge workflow but do not provide a rights-cleared original badge photo or official reusable raster render with complete attribution and processing provenance.

The record remains image-free rather than copying wiki images, badge-design screenshots, attendee photos, placeholder art, or generated approximations.

Confidence
local project policy
Status
needs licensed original replacement
Timeframe
current catalogue build
Source note
badge.gallery image policy and Entropia GPN23 FAQ, HowTo/Badges, Awareness, and Orga pages.

Resources

GPN23 FAQ badge and lanyard note FAQ · FAQ guidance for visitor badges, lanyard reuse, and no-classic-ticket registration context. GPN23 awareness badge etiquette awareness page · Awareness page asking attendees to use names and pronouns written on badges. GPN23 badge how-to production notes · Badge design and production notes with format, print, lanyard, marker, and used-count details. GPN23 event wiki event wiki · Official Entropia wiki entry for GPN23 at HfG and ZKM Karlsruhe. GPN23 orga Badges area orga page · Orga table naming Badges as the area responsible for participant name signs.

Sources

Entropia wiki: GPN23 Retrieved 2026-05-15 · Primary event source for GPN23 timing and Karlsruhe venue context. Entropia wiki: GPN23 FAQ Retrieved 2026-05-15 · Source for lanyard reuse guidance, badge pickup context, and capacity/registration rather than classic ticketing. Entropia wiki: GPN23:HowTo/Badges Retrieved 2026-05-15 · Primary production source for badge format, paper weight, lanyards, markers, badge punching, hidden-pattern design notes, and used counts. Entropia wiki: GPN23 Awareness Retrieved 2026-05-15 · Source for names/pronouns written on badges and respectful use of those visible identity fields. Entropia wiki: GPN23 Orga Retrieved 2026-05-15 · Source naming the Badges area and responsibility for participant name signs.