Year
Hacker conference badges documented for 2015, sorted by country.
STM32 Hardware Hacking Village badge
Ruxcon 2015's Hardware Hacking Village badge is preserved here as an Australian STM32 badge with public KiCad/Gerber files, schematic material, firmware examples, SMD assembly instructions, CR2032 power, and SWD/OpenOCD programming notes.
Team hardware badge for the Bonsecours CTF
NorthSec's official past-editions page documents the 2015 Bonsecours CTF as a 54-team competition where participants, grouped in teams of eight, each had a hardware badge tied to network, IPv6 workstation, RF-monitoring, smartcard, and related challenge paths.
Electrolab Arduino Micro-compatible kit
A limited NDH2K15 electronic collector badge kit sold through the official Nuit du Hack store, described as Arduino Micro-compatible, USB-compatible, easy to program or hack, and developed by Electrolab.
CCCamp 2015 SDR badge
A HackRF-inspired software-defined radio badge that let campers receive, transmit, inspect spectrum, flash evolving firmware, solder RF add-ons, and keep hacking long after camp.
Ticket, certificate checksum, and CAcert ID context
A conservative non-electronic Camp++ 2015 record for attendee identity: the official camp pages document the third annual outdoor geekery as the camp before the camp, with ticket registration, no required personal data, end-of-event data destruction, certificate checksum verification, bring-your-ticket arrival guidance, and state-issued photo ID only for optional CAcert assurance.
Japanese ATmega328P LED attendee badge
AVTOKYO's official 2015 badge page says the conference made an electrical badge for attendees, with an AT-MEGA328P-PU, eight 5mm LEDs, two push buttons, 16 MHz crystal, resistors, capacitors, IC socket, coin-cell holder and battery, public KiCad PCB design, and public Arduino program.
Cyberwar is Hell visible venue credential
Kiwicon 9's official site told attendees to wear their badge visibly while in the venue and documented early pickup before the December 10-11, 2015 Wellington conference.
ESP8266 Badger hacking board
The BSidesPDX 2015 Badger badge is a conservative source-backed badge-hacking board record tied to the official Electronic Taxidermy: Badger Hacking workshop and the public PDX Badgers 2015 PCB and firmware repositories.
Playable vinyl-record noir puzzle badge
A Ryan Clarke / 1o57-designed DEF CON 23 badge issued as an actual playable 7-inch vinyl record, with role-colored editions, printed mystery alphabets, inner-groove markings, lanyard ciphers, record audio, and a noir-themed badge challenge.
PSoC4 blinky badge and VoCore OpenWRT network badge
LayerOne 2015's badge effort produced two electronic badge designs documented by the official Hardware Hacking Village archive and CharlieX's Hackaday.io project: a battery-powered PSoC4, ESP8266, and WS2812B blinky badge plus a VoCore/RT5350F OpenWRT network badge with Wi-Fi and dual Ethernet intent.
Hand-built HackRVA PCB badge with IR, LCD, audio, and USB
The RV4sec 2015 badge is documented by HackRVA's official build post as a hand-built electronic badge with custom PCB assembly, surface-mount components, IR, audio, micro USB, LCD, and an optional reset-header development path.
Cisco CMX-linked attendee badge with LCD, buttons, schedule, and challenge score
The SAINTCON 2015 badge was a purpose-built Wi-Fi enabled attendee show badge described by Cisco as a conference-scale experiment: roughly 550 participants carried LCD-and-button badges that used Wi-Fi location data for zone awareness, schedule lookup, and live Hacker Challenge score display.