r2con
The September 6-9, 2017 radare2 reverse-engineering congress in Barcelona, whose official schedule included NighterMan's r2con badge manufacturing talk and whose attendee reporting documents a limited speaker/friends electronic badge.
Barcelona · Spain · 2017
A limited electronic badge made for r2con 2017 speakers and friends in Barcelona, documented by the official badge-manufacturing talk and first-hand reporting that says it showed project-status information such as build state, last commit, and GitHub stars.
Lifecycle
The first-hand writeup says the badge indicated information such as build status, last commit, and GitHub stars.
The official r2con schedule included NighterMan's badge talk covering prototyping, design, debugging, assembly, encountered problems, manufacturing, and tools.
The recovered first-hand report describes the badge as fancy hardware for speakers and friends, so the record does not claim general attendee distribution.
Operational history
Hardware and software descriptions stay limited to what the sources explicitly support.
The compendium models the object as a limited conference artifact instead of an all-attendee badge.
The record remains image-free rather than copying social or attendee imagery without complete reuse provenance.