This year's Defcon badges include Baochip-1x, an open source chip whose security is verifiable and that can also be used as a hardware security token (Kim Zetter/Wired)

ThinkingNews Desk · how this was written

The latest Defcon badges incorporate an open-source chip known as Baochip-1x, which can be inspected visually. This chip serves as a hardware security token, allowing the badge to function as a security key whose cryptographic integrity can be independently verified. Its design enables attendees to confirm the chip’s authenticity and security properties.

Written from all 3 reports below, not from any single one.