Lifecycle

Add-ons & Upgrades

Badge ecosystems keep moving after handout: apps, hexpansions, SAOs, antennas, cases, repair parts, firmware updates, and post-event hardware experiments.

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2276 matching add-on(s)
JawnCon 0x3 Calculator Badge official manual and firmware image

badge games

Hidden calculator games

Typing 1337, 1338, or 0203 followed by = starts Higher or Lower, DTMF Tone Recall, or Hex Recall, with high scores saved across power cycles; the manual says at least one more game is hidden, hinted by a LOCKED high-score line, and may need a friend. The October 17 firmware image lists a fourth high-score line, Vault - fewest attempts to crack.

Compatibility: JawnCon 0x3 Calculator Badge

Source
ROOTCON 20 Electronic Badge official firmware binary

badge games

Tetris and Breakout games

The firmware includes Tetris and Breakout with high scores saved to /prefs/tetris.dat and /prefs/breakout.dat, a GAME OVER screen, and a games-reset option.

Compatibility: ROOTCON 20 electronic badges running rc20-human-fw; controls and any CTF or quest layer are not documented.

Source
RVAs3c 2014 Badge planned/source-backed

badge hacking workflow

USB bootloader goal

The preview describes a bootloader and micro-USB programming path as a goal for post-event hacking.

Compatibility: RVAs3c 2014 Badge

Source

badge hardware

ESP32-S3 and TROPIC01 secure-element core

The official 39C3 CDC Badge presentation and RIAT hardware repository identify an ESP32-S3 development platform paired with a TROPIC01 secure element. The catalogue does not treat that hardware description as a claim about every physical event unit's exact revision or configuration.

Compatibility: 39C3 Critical Decentralization Cluster Badge

Source
39C3 Cyberwatch Badge source-backed

badge hardware

Modular watch architecture

The 39C3 Cyberwatch project is documented as a solderable watch-style base badge that is designed to accept interchangeable shard boards through a modular hardware concept.

Compatibility: 39C3 Cyberwatch Badge

Source
39C3 Cyberwatch Badge source-backed

badge hardware

SD-card shard interface

The project documentation describes an SD-card form-factor interface used to carry modular add-on boards in place of fixed accessory ports.

Compatibility: 39C3 Cyberwatch Badge

Source
HackConRD 2026 eBadge source-backed

badge identity settings

NVS profile and role persistence

The README documents a seven-character nick, BadgeRole profile, LED brightness, RF profile, fox frequency, friends history, challenge state, and high-score keys in NVS.

Compatibility: HackConRD 2026 eBadge

Source
Queercon 16 Q Badge source-backed

badge input surface

Custom membrane keyboard

The Q badge used a full-color custom membrane keyboard with embossed keys, LED windows, and a layout tailored to the conference ARG.

Compatibility: Queercon 16 Q Badge

Source

badge interaction

Badge-to-badge serial link

From the serial menu, two badges joined by crossed TX/RX (pin 16 to pin 15 in the October 19, 2026 manual, after pins 10 and 8 in the October 15 copy) and ground handshake at 9600 baud, show each other's boot text, and add to a permanent link count; the connector style is left to the builder, and something may change after the first link.

Compatibility: Two JawnCon 0x3 Calculator Badges

Source
RVAsec 2013 Badge source-backed

badge interaction

Infrared badge play

Official sources document IR communication and badge-to-badge game behavior in the 2013 badge lineage.

Compatibility: RVAsec 2013 Badge

Source

badge interaction

Keyboard HID output

The USB descriptor and keyboard source expose a keyboard HID interface, scan-code conversion, report sending, and button-triggered output including the default `LayerOne 2023` string.

Compatibility: LayerOne 2023 PIC HID Badge

Source
DEF CON 17 Badge source-backed

badge interaction mode

Sound-reactive Party mode

In Party mode, the badge's RGB LED reacted to audio input volume and frequency from the onboard amplified MEMS microphone.

Compatibility: DEF CON 17 Badge

Source
DEF CON 15 Badge source-backed

badge interaction surface

Capacitive touch and POV modes

Two QT100 capacitive sensors controlled the five operating states, including text display, text entry, scroll-speed selection, persistence-of-vision, and sleep.

Compatibility: DEF CON 15 Badge

Source

badge interaction surface

Passive NFC identity surface

The design journal describes a passive NFC tag and antenna receiving harvested energy, alongside I2C/control wiring intended for possible active-NFC customization. This preserves the layered NFC design concept without asserting a final attendee-unit NFC IC, protocol, provisioned data, reader behavior, access-control role, enabled active mode, deployment, safety certification, or privacy practice.

Compatibility: Overglade 2026 Zero-Power NFC E-Ink Badge

Source

badge interface

8x32 LED matrix menu

The badge uses an 8x32 LED matrix and three buttons to show SAINTCON, a custom message, Hacker Challenge score, Hacker Challenge ID, brightness, Wi-Fi status/configuration, and minibadge controls.

Compatibility: SAINTCON 2018 ESP32 Badge

Source

badge interface

Capacitive-sense inputs

The firmware imports CapacitiveSensor and defines two capacitive sensors across pins 3/2 and 3/4, with capacitive readings changing the alternate animation resolution.

Compatibility: BSidesPDX 2016 ATTiny85 Badge

Source
THOTCON 0x8 Badge source-backed

badge interface

LED compass maze feedback

The four RGB LEDs represented open pathways, portals, keys, and wall/death states around the player's current maze position.

Compatibility: THOTCON 0x8 Badge

Source
DEF CON 30 Badge historical

badge interface

Playable synthesizer keyboard

The badge operated as a playable musical keyboard and synthesizer with instrument behavior, display, speaker, and challenge mode tied to note entry.

Compatibility: DEF CON 30 Badge

Source
REcon 2026 Badge officially documented

badge interface

RECON2026 USB CLI

A USB serial console enumerating as RECON2026 exposes commands for ping, mode, LEDs, LoRa transmit, chat, stats, beacon, scan, lock, Simon, reset, and test injectors.

Compatibility: REcon 2026 Badge

Source