Defcon attendees are known for leaving the annual security conference with more than talks and software research. The event has long treated its badges as a major part of the experience, turning them into elaborate pieces of hardware that reflect hacker culture as much as conference access.

This year, that tradition is getting a new twist with a badge built around a unique open source chip created by hardware hacker Andrew “bunnie” Huang. According to the report, the badge is not only a collectible conference device but also functions as a security key, giving it a practical role tied directly to digital security.

The combination is notable because it brings together two ideas that often sit at the center of the security world: trust and transparency. By using an open source chip, the project appears designed to let technically minded users examine how the hardware works rather than treating it as a sealed black box.

For Defcon, that makes the badge more than a novelty. It fits the conference’s reputation for pushing boundaries in how security tools are built, tested, and discussed, while also showing how conference hardware can double as a real-world authentication device.