Add-on dossier
BLE color-propagation behavior
A linkable lifecycle record for hardware expansions, app ecosystems, firmware upgrades, cases, radio parts, and post-event badge experiments.
Back to add-ons index
badge-to-badge interaction
The attendee's analysis reports that the delivered firmware observes compatible BLE advertisements, changes the RGB LED from received color values, and relays them with loop avoidance. This documents an interaction behavior without publishing packet construction, operating instructions, production-firmware identity, range, compliance, or final event deployment claims.
- Badge
- THcon 2026 Badge
- Type
- badge-to-badge interaction
- Status
- first-hand firmware analysis
- Compatibility
- THcon 2026 Badge
- Source
- https://virtualabs.fr/geekeries/thcon26-badge-writeup
Badge context
Related Resources
official badge page
Official dedicated badge page documenting the ESP32-C6 electronic badge, the Badge3000 WiFi access point, the I2C OLED, and the BLE padlock and one-time-password challenges.
Badge: THcon 2026 Badge
official event page
Official THcon source for the May 5-6, 2026 tenth edition talks at the Marthe Condat auditorium, Paul Sabatier University, Toulouse, with the on-site CTF on May 7 at ENSEEIHT.
Badge: THcon 2026 Badge
technical analysis
Virtualabs attendee teardown documenting the received board's ESP32-C6-WROOM-1, SSD1306 OLED, WS2812 LED, ATC24C04 EEPROM, SAO connector, battery/TP4056 path, CH340C serial bridge, and analyzed BLE color-propagation behavior. It is independent artifact analysis, not an official source release or a reusable-image grant.
Badge: THcon 2026 Badge
Source trail
Evidence Sources
THcon · retrieved 2026-05-15
Primary official source for the ESP32-C6 microcontroller, Badge3000 WiFi AP, I2C OLED at 0x3C, and the BLE padlock and one-time-password badge challenges.
Badge: THcon 2026 Badge
THcon · retrieved 2026-05-15
Primary official source for the tenth Toulouse Hacking Convention dates, venue, and French security-conference context.
Badge: THcon 2026 Badge
Virtualabs · retrieved 2026-05-15
A May 13, 2026 first-hand attendee hardware and firmware analysis of a badge distributed by staff at THcon. It corroborates the artifact-level component inventory and BLE color-propagation behavior, while not constituting an official firmware, hardware-design, release, or image-reuse source.
Badge: THcon 2026 Badge