Issue dossier
A linkable camp-impact record with badge context, severity, evidence confidence, and source notes.
The record treats the badge as an optional paid item, not an attendee-wide handout.
Evidence
Official badge section: feature list, front and back photos of the Black Badge prize variant, and the note that standard attendee badges come in other colours. The photos carry no reuse licence and are linked only.
Official TenguCon 3.0 site with the November 19-20, 2026 dates, the Akihabara UDX venue, the timetable, villages, sponsors, and ticket and badge prices.
Official press and creator page with the organizer contact, a consent-based filming policy that asks to check before capturing badges, and interview requests for village hosts and badge creators.
TenguSec's Meetup event for registration, in English and Japanese, with the advance and door ticket prices and the two cash-only badge options.
Source trail
Official media page confirming the dates, the UDX Conference venue on the sixth floor of the South Wing, and TenguSec as organizer. It offers interviews with village hosts and badge creators but names neither, and gives no image licence.
Primary official source (Last-Modified November 10, 2026). The badge section says the TenguCon 3.0 badge brings a full keyboard, game controls, and a colour display together with wireless and infrared connectivity, and lists ESP32-S3, IR blaster and receiver, LoRa Ra-01SH module, full QWERTY keyboard, Bluetooth, Wi-Fi, SD card slot, game controls, 10 fully addressable RGB LEDs, and colour display. It says the pictured Black Badge is reserved for the scavenger hunt/CTF winner and standard attendee badges come in other colours. The registration section lists 4,500 yen advance and 3,000 yen door admission, 12,000 yen badge plus admission and 10,000 yen badge only, both cash at the door, and says the limited-edition ESP32 LoRa attendee badges are sold at the venue while supplies last.
Official registration page for the November 19-20, 2026 event at Akihabara UDX. Its English and Japanese text introduce the TenguCon 3.0 Hardware Badge as a fully featured, custom-built ESP32-based LoRa platform designed exclusively for the event and functional hacking hardware rather than a keepsake, sold at the door, cash only, at 12,000 yen with admission or 10,000 yen alone, in strictly limited quantities, first come, first served.