Mr. Hi
The first-hand retrospective names Mr. Hi as one of the two co-organizers who helped create the 2025 badge.
SourceBSides Prague 2025 · Czechia · 2025
BSides Prague 2025 Electronic Badge
Czech Security BSides PCB badge with attendee chip challenges
A source-backed Czech Security BSides electronic badge record: the official BSides Prague 2025 schedule page announced a PCB badge powered by multiple processors, and a first-hand organizer retrospective documents the first generation of electronic badges, attendee chips, challenge XP, interactive panels, and nickname display.
EventBSides Prague 2025
SeriesBSides Prague
LocationGabriel Loci, Prague
CountryCzechia
People
Authors & Credits
Marek
The first-hand retrospective names Marek as a badge co-creator and says he hid secrets in the reversible chip software.
SourceMartin Hron
The first-hand retrospective names Martin among the organizers who created the 2025 badge design.
SourceBSides Prague
Official publisher of the 2025 event schedule and electronic-badge page used for this Czechia record.
SourceHung Ngo
Hung Ngo's first-hand organizer retrospective supplies the badge, chip, challenge, interactive-panel, and attendance evidence.
SourceWhy It Mattered
It adds Czechia to the worldwide compendium with a modern regional BSides badge while keeping claims tied to public event and organizer sources rather than inferring unrecovered schematics, firmware, component identity, or image rights.
Hardware
The official event page describes a non-typical conference badge designed with everything on a PCB, modular construction, multiple processors, and two integrated systems working together. The organizer retrospective adds that the badge was inspired by old rotary telephones, includes a slot for a new chip, blinks after assembly, and displays the attendee nickname.
Software & Apps
The organizer retrospective says each attendee received a chip for event activities, challenges awarded experience points, high scorers received rewards, and the software on the chips was reversible so curious attendees could uncover hidden material. Interactive panels handled CTF signup, answer submission, and Sched-profile display of nickname, profile picture, and XP points.
Lore
BSides Prague 2025 carried the Evolution to Revolution theme across an April 3-4, 2025 Prague event at Gabriel Loci. The first-hand retrospective frames the electronic badge as one of the major fresh-tech additions and credits Martin, Mr. Hi, and Marek with creating the new badge design.
Lifecycle
Add-ons & Upgrades
badge challenge
source-backed
Attendee chip challenge flow
The organizer retrospective says each attendee received a chip for event activities, challenges awarded experience points, and the chip software was reversible for hidden discoveries.
Source
badge interface
source-backed
Nickname display after assembly
The retrospective says the badge started blinking after assembly and displayed the attendee nickname plus other visual material.
Source
event infrastructure
source-backed
Interactive panel integration
Interactive panels were used for CTF signup, answer submission, attendee Sched-profile display, nicknames, profile pictures, and XP points.
Source
hardware architecture
source-backed
PCB badge with two integrated systems
The official page describes the electronic badge as a PCB-based, modular artifact powered by multiple processors with two different systems integrated together.
SourceOperational history
Issues & Camp Impact
missing rights-cleared image
note
No BSides Prague 2025 badge image is published because the recovered official and organizer pages do not provide a specific badge image with reusable license or explicit permission, attribution, source URL, and processing provenance.
The Czechia record remains source-backed and image-free rather than copying all-rights-reserved blog photos, event-site media, or generated badge art.
- Confidence
- local project policy
- Status
- needs licensed original replacement
- Timeframe
- current catalogue build
- Source note
- badge.gallery image policy, BSides Prague 2025 Sched page, and Hung Ngo all-rights-reserved footer.
technical-source gap
note
The recovered public trail proves an electronic PCB badge, multiple processors, two integrated systems, chip-based challenges, and nickname display, but does not expose schematics, PCB files, BOM, component identities, firmware, challenge binaries, protocol docs, or production files.
The catalogue keeps the record useful without inventing part numbers, exact processors, firmware behavior, or board-source availability.
- Confidence
- source-backed but incomplete
- Status
- needs artifact-level archive
- Timeframe
- post-event archive
- Source note
- BSides Prague official Sched page and Hung Ngo organizer retrospective.
Resources
BSides Prague 2025 electronic badge page
official event page · Official Sched page for the April 3-4, 2025 Security BSides Prague event, Gabriel Loci venue trail, and electronic badge announcement with PCB, modular, multiple-processor, and two-system wording.
BSides Prague organizer retrospective
first-hand organizer writeup · Hung Ngo organizer retrospective documenting the 2025 first-generation electronic badge, rotary-telephone inspiration, attendee chips, challenge XP, reversible chip software, interactive panels, nickname display, named badge creators, and more than 550 attendees.
Sources
Hung Ngo: BSides Prague: A Journey from Speaker to Organizer
Retrieved 2026-05-15 · First-hand organizer source for the first electronic badge generation, chip-based challenges, XP/reward flow, interactive panel integration, post-assembly blinking and nickname display, creator names, and attendance scale.
Security BSides Prague / Sched: Security BSides Prague 2025: Electronic Badge
Retrieved 2026-05-15 · Primary official source for the April 3-4, 2025 Prague event context and electronic badge claims: PCB construction, modular design, multiple processors, and two integrated systems.