Electronic badge
Gadget that is a replacement for a traditional paper-based badge or pass issued at public events From Wikipedia, the free encyclopedia
An electronic badge (or electronic conference badge) is a gadget that is a replacement for a traditional paper-based badge or pass issued at public events.[1] It is mainly handed out at computer (security) conferences and hacker events.[2] Their main feature is to display the name of the attendee, but due to their electronic nature they can include a variety of software. The badges were originally a tradition at DEF CON, but spread across different events.[3]

Examples
Hardware
- SHA2017 badge, which included an e-ink screen and an ESP32[4]
- Card10 for CCCamp2019[5][6]
- Electromagnetic Field Camp badge[7][8]
Software
The organization badge.team has developed a platform called "Hatchery"[9] to publish and develop software for several badges.[10]
References
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