Area41 2026 ESP-Based Electronic Badge
Swiss ESP blinking attendee badge with SAO invitation
A source-backed Area41 2026 attendee electronic-badge record. The official event page said each attendee would receive an ESP-based blinking electronic badge and invited badge owners to bring Shitty Add-Ons (SAOs). The organizer's post-event recap identifies Technische Fachschule Bern as the badge designer and assembler, while the school's own update says it developed and manufactured the hardware; the recap also reports attendees soldered more than 300 SAO badge extensions.