Biohacking startup Dangerous Things is seeking to raise US$8,000 on crowd sourcing website Indiegogo to begin producing an implantable NFC tag that can be used to unlock phones, open doors and share contact details with friends.

The xNT tag is an NFC Type 2 tag that is encased in a 2mm by 12mm cylindrical Schott 8625 bioglass vial and sterilized in ethylene oxide gas. The team has already produced four prototypes which have been implanted into beta testers' hands.

A video from Dangerous Things founder Amal Graafstra, who has two implants, explains the xNT concept in depth:

Dangerous Things hopes to raise the money by 17 December in order to put the NTAG203-based xNT into mass production.