Defcon’s BaoChip-1x Turns Badge Into Open‑Source Security Token
The 2024 Defcon badge houses BaoChip‑1x, a mostly open‑source microcontroller that can be detached and used as a hardware security key. Huang released the chip’s firmware, processor core and cryptographic engines on GitHub and packaged it so infrared light can verify the silicon, making the design auditable. This gives hackers a verifiable, reusable token beyond the conference.