Powered by three contactless NFC NDEF tag (type 4 and 5) EPROMS (4Ko and 64Ko) the Intervillage Badge supports a variety of radio transport data access. Try it's fun gamifications, hack it's circuits, impersonate your other NDEF devices, or use it for plain card and tag backups.
The electronic badge needs no batteries or cables, and features a innovative design to defend against opportunistic data theft. A protective leatherette back and translucent frame enclose the colourful device.
Several Defcon Villages are collaborating on applications unique to their fan base. Get creative and download the Opensource project archive.
It seems that Hak5 has listed this in their shop.
https://shop.hak5.org/products/intervillage-badge/