Tag dossier
Badge records tagged with BLE, across Brazil, Canada, Denmark, France, Germany, Italy, Mexico, Panama, Peru, Singapore, United Kingdom, United States.
nRF51 and STM32 OLED/BLE badge
NorthSec's public 2016 badge repository documents an electronic attendee badge with nRF51822 and STM32F072CB microcontrollers, OLED display, BLE, battery management, touch buttons, red/green LEDs, USB, SWD programming, and STM32 USB DFU support.
Unofficial DEF CON 25 nRF52 BLE badge with BOTNET game
The AND!XOR DC25 Badge was an unofficial DEF CON 25 badgelife board built around a Rigado BMD-300 / Nordic nRF52 module, color TFT, WS2812B LEDs, sensors, microSD, BLE smartphone integration, TCLish scripting, BYOB bling, CHIP8/SCHIP games, and a badge-to-badge BOTNET game.
Nordic BLE badge and Ox-Vox add-on target
The BSidesPDX 2017 badge is a source-backed Portland Security BSides badge archive tied to the official schedule's badge context, Rob Rehrig's Ox-Vox add-on talk, and the public PDX Badgers Eagle board, schematic, and BOM repository for a BMD-300/OLED/CR2032 design.
nRF51 and STM32 badge with event firmware images
The NorthSec 2017 badge repository documents a dual-MCU electronic badge with nRF51822 BLE/OLED control, STM32F072 USB and touch-button handling, battery management, red/green LEDs, schematic files, website material, and multiple firmware images.
Bottle-shaped ESP32 BLE and OLED badge
A small-batch H2HC 2018 bottle-shaped PCB badge with an ESP32 WROOM, I2C OLED display, six controllable LEDs, BLE behavior, AAA or USB power, and Arduino IDE source-code notes.
nRF52 OLED/BLE badge with NeoPixels
The NorthSec 2018 badge repository documents an electronic badge with an nRF52832 main controller, STM32F070 USB controller, OLED display, BLE, NeoPixel RGB LEDs, buttons, battery management, Li-ion/USB power, USB charging, and schematic release.
nRF52 OLED/BLE badge with games and challenges
The NorthSec 2019 badge repository documents an nRF52832 and STM32F070 electronic badge with OLED, BLE, NeoPixel RGB LEDs, buttons, USB, Li-ion or USB power, schematics, BOM material, Gerbers, firmware applications, games, challenges, schedule code, and BLE/LED control utilities.
CCCamp 2019 wearable sensor badge
A wrist-worn CCC Camp badge focused on sensing, health-style signals, BLE, and a Python-friendly app ecosystem.
ESP32 North Sectoria RPG badge
NorthSec's official 2021 badge page and repository document an ESP32 electronic badge with Wi-Fi, BLE, 240x240 color LCD, NeoPixel RGB LEDs, six buttons, buzzer, UART serial port, micro-USB or external battery power, ESP-IDF firmware, and ten badge flags tied to the North Sectoria game theme.
ESP32-C3 dragon-sphere camp badge
A Cyber Saiyan-designed ESP32-C3 badge for RomHack Camp 2022, with seven RGB LEDs, BLE badge discovery, schedule screens, WiFi/AP functions, snake, a 2.4 inch TFT, two rear buttons, and AA battery power.
EMF 2024+ reusable hexpansion platform
A reusable hexagonal badge platform with six expansion slots, MicroPython apps, and community hexpansions.
LoRa and Meshtastic badge
A circular ESP32-C3 badge focused on LoRa, Meshtastic, WiFi, BLE, RGB LEDs, external antenna use, and expansion connectors.
Independent ESP32-S3 party badge with a scheduled DC33 BadgeLife drop
BigTaro's Tindie listing calls FightDystopia 2025 an electronic party badge, prices it at $150, and displays an out-of-stock state that says it has been sold out since August 11, 2025. The maker says it detects a user-defined list of BLE MAC addresses to give a heads-up about what is around the user; includes a CTF with Windows Vista-era throwbacks, hardware and software puzzles, unlockable bling and GIFs, two custom PCBs sandwiching a screen for a retro-TV aesthetic, an ESP32-S3-based fully-programmable claim, twelve RGB LEDs, a custom lanyard, and stickers. The DEF CON 33 Creator Events List independently schedules a Friday BadgeLife Community drop naming FightDystopia alongside Submarine and FrogStar. This establishes a source-backed independent 2025 electronic artifact and scheduled event association, not an official DEF CON credential, universal or completed handout, BLE detection mechanism, security or privacy assurance, firmware source release, party-benefit accounting, or reusable-image rights.
ESP32-S3 Minino badge for BLE, Wi-Fi, OLED, and badge apps
HackGDL 2025's official Electronic Cats event badge was an ESP32-S3 Minino-platform badge with BLE, Wi-Fi, USB-C, four buttons, three NeoPixels, an OLED screen, buzzer, three-AAA battery holder, SAO connector, case, and ready-to-use badge apps.
Antisyphon-sponsored ESP32-S3 badge CTF
The Wild West Hackin' Fest Deadwood 2025 e-badge was the conference's electronic badge and badge CTF artifact. The official WWHF e-badge page identifies Antisyphon Training as the badge sponsor, Meta CTF as the scoreboard/challenge partner, multiple challenges solvable from badge behavior or firmware, and Ray Feltch, David Fletcher, and Rick Wisser as badge-team contacts.
CSIT C517 finalist BLE mesh challenge hardware
A source-backed TISC@DEF CON SG finals challenge artifact: CSIT's official C517 page documents the on-site TISC finals, and a finalist writeup says each of the top-50 finalists received an ESP32 hardware trinket running a customized BLE mesh chat protocol to reverse engineer.
Limited ticket-holder CH573F badge with a public hardware archive
DOJOConf Panamá's official page advertises a limited, separately purchased electronic badge available only to ticket holders, with an integrated OLED, four physical buttons, and a rechargeable USB-C battery. An organizer-controlled update says the 2026 badge will be useful in the CTF, and an Electronic Cats post names that organization as the edition's designer and maker. Electronic Cats' public `badge-dojocon-2026` repository separately identifies itself as the official Badge DojoCon Panamá 2026 archive and has a pre-event v1.0 release. Its commit-pinned documentation records a CH573F RISC-V/BLE design with an OLED, directional buttons, a WS2812B LED, USB-C, and a battery connection. These sources establish a real event artifact and public design trail, not completed delivery or a source-to-recipient configuration mapping.
Open-source pre-event 125-unit Meshtastic Simple Add-On for DEF CON 34
Darknet-NG's own current badge page identifies the Darknet-NG SMAO as its Level 3 build: a full Meshtastic node in an SAO form factor. The maker's live Uberflux product payload describes a $55 125-unit presale and currently reports 125 sold with zero remaining, no shipping options, and DEF CON 34 contest-booth pickup only; that is a time-specific availability snapshot, not proof of completed manufacture, collection, or delivery. A matching maker-owned, commit-pinned `dcbokonon/darknet-smao` release now publishes the v1.4 KiCad project, fabrication outputs, BOM/placement data, firmware build material, and RF-tuning source, alongside an MIT-licensed official upstream board render. This is a source-backed independent pre-event mesh-radio add-on record, not independent RF/compliance validation, a DEF CON organizer-issued product, conference credential, admission right, or completed fulfillment record.
Completed independent three-radio ESP32-S3 RF-awareness badge
The public Friend or Foe project archive documents a three-board ESP32-S3 badge shown at DEF CON 34 Packet Hacking Village. Its hardware documentation records a 45-badge DEF CON run and the project root describes a wearable, passive RF-awareness platform with an uplink/display controller and dedicated BLE and Wi-Fi scanner boards. Packet Hacking Village's official DEF CON 34 programme independently establishes the completed village setting and the Friend or Foe presentation. These sources establish a completed independent electronic project, not an official DEF CON Human badge, conference-wide handout, admission credential, or recipient ledger.
Pre-event independent two-object ESP32-S3 interaction badge project for DEF CON 34
Two contemporaneous project posts authored by the public Reddit account u/zer0patient and signed H4irl1n3 M0gg3r5 describe an independent planned DEF CON 34 Zombie Badge project. The later source explicitly describes two objects using ESP32-S3, IR, NFC, BLE, a buzzer, and a source-described transmission/counter relationship; it also announces a firmware-based, multi-stage CTF and an unreleased backend. It further describes crew-operated live transmission zones, fixed Cure Stations, hidden 3D-printed medkit props, and a separate brain-in-a-jar SAO. The earlier post calls the work the team's first year making badge or badges, says a second variant is part of the experience, and announces intended drop-based distribution. These are source-backed pre-event maker statements about a real planned artifact system, not proof of final manufactured variants, component selection, wireless behavior, game implementation, inventory, drops, event authorization, DEF CON organizer affiliation, conference admission, or reusable-image rights.
ESP32-C3 NFC hacker badge with Lua apps, open-sourced hardware and firmware
The Hack the North 2026 hacker badge, documented by the official Devpost event page, attendee firmware archives, and since October 13-14, 2026 by Hack the North's own open-source hardware and firmware repositories: an AA-powered ESP32-C3-MINI-1 board with a 320x240 ST7789 display, eight buttons, an SC7A20 accelerometer, an MFRC522 NFC reader, and WS2812B LEDs. It served as each hacker's ID and meal QR code, unlocked hidden apps by scanning flower-pattern stickers, swapped contacts by bumping badges over BLE, ran a Solana NFC scavenger hunt, and installs user Lua apps from a browser IDE.
Independent ESP32-S3 BLE and Wi-Fi scanner badge offered for DEF CON 34
DC801's live Helgatchi product page identifies a $120 portable, rechargeable BLE-beacon and Wi-Fi-access-point scanner/hunter with configurable alerts. It names a XIAO ESP32-S3, 8 MB flash, a 400 mAh 3.7 V LiPo, 1.69-inch 240 by 280 Waveshare LCD, six RGB LEDs, vibration motor, and external SMA-RP 2.4 GHz antenna path. Pips801's public repository contains separate hardware and firmware/UI trees, while the public DEF CON 34 Badgelife response identifies DC801 + 801 Labs' Helgatchi as a new badge associated with the August event. The listing remains an independent seller artifact with planned July pickup/shipping terms—not official DEF CON issuance, a Human badge, admission, confirmed recipient delivery, a fully audited detection device, an open-source license, or a rights-cleared image.
Minew MTB11 ambient-light-harvesting BLE conference tag
IEEE RFID 2026's official conference page advertised a complimentary twentieth-anniversary Bluetooth Low Energy badge, with 100 badges available. Its dedicated badge page identifies the active artifact as a custom-printed Minew MTB11 ambient-light-harvesting BLE tag. The source says that, when sufficiently charged from ambient light, it transmits a unique 48-bit identifier, battery voltage, and temperature in Bluetooth Low Energy advertisement packets. The technical-programme chairs' welcome confirms the June 16-18 Santa Fe conference occurred, but the sources do not establish individual receipt or final device state.
ESP32 weather and crank-powered quest badge
Kernelcon's 2026 Off Grid badge is an ESP32 weather-prediction and quest badge with BME280 temperature, humidity, and pressure sensing, twenty addressable RGB LEDs, AAA and hand-crank power modes, BLE/proximity scanning, and MicroPython firmware.
Pre-event independent BLE number-station puzzle badge for DEF CON 34
Station 562 is a source-conservative independent DEF CON 34 badge record from its public maker announcement. The project owner describes a proximity-controlled badge with a BLE number-station puzzle, red-versus-blue proximity game, autonomous social/dance mode, expressive BLE MIDI instrument, tamper-evident mode, Setup menu, and optional hardware CTF. In follow-up comments, the maker reports about 55 units made so far, signed firmware with a distinct key pair per badge, a constrained giveaway/sale plan, and RGB blank boards that omit the OLED, LiPo, and ESP32 module. No public repository, schematic, firmware release, final availability ledger, or reusable-image permission was recovered.
French ESP32-C6 B.A.D.G.E. with OLED, SAO, and BLE color propagation
The official THcon 2026 B.A.D.G.E. page documents an ESP32-C6 electronic badge with the Badge3000 WiFi access point, an I2C OLED at address 0x3C, and BLE padlock and one-time-password challenges for the May 5-6 tenth edition in Toulouse. A May 13 first-hand attendee teardown identifies the distributed board as an ESP32-C6-WROOM-1 build with an SSD1306 OLED, WS2812 RGB LED, ATC24C04 EEPROM, SAO connector, single-cell battery/TP4056 charging path, and USB-C CH340C serial bridge; it also documents the delivered firmware's BLE color-command propagation behavior.
CH573F BLE virtual-pet and CTF electronic badge
A source-backed Peruvian Unknown Security Conference 2026 electronic-badge record that joins the official pass's lanyard-and-badge inclusion with Electronic Cats' self-described official Pwn Llama badge repository. Its public history shows hardware work before the June 4-6 Lima event and a July documentation update.