Head out to your next corporate conference, and you’ll probably be handed a little paper badge in a plastic holder so people can learn what to call you (or whether they should talk to you at all). It serves a function, but it’s a little soulless. [Aahan Sharma]’s Eye-D badge is a touch more interesting.At the heart of the build is an ESP32-C6 microcontroller. It’s a capable part, with clock speed configurable up to 160 MHz, and wireless connectivity baked in. It’s hooked up to an 8 x 16 matrix of WS2812B addressable RGB LEDs, creating a color 128-pixel display. [Aahan] took advantage of the onboard Bluetooth Low Energy connection of the ESP32 to enable the display to be readily controlled by a smartphone, tablet, or laptop.It can be configured to display a name, social handle, or custom message as desired. Beyond that, it can display animations, like an eye scanning around the room, Nyan Cat, or fire or Matrix-like effects just for the fun of it. There’s also a Draw Mode that lets one create their own pixel art on the display, too. [Aahan] wanted the build to feel like a serious conference badge, rather than a random electronic trinket, so whipped up a custom enclosure. The LEDs, microcontroller, and a battery, are all wrapped up in a tidy 3D printed housing with a ring for easily hanging the badge from clothes, lanyard, bag, or similar.If you’re running your own little conference and have the budget for something cool, you might like to build a run of these. Or, you could explore some of the more advanced badge designs that are out there.