The chip path
A passport carries an NFC chip signed by the issuing state. We read the chip, verify the signature chain to a national root, and match the live selfie against the photograph the state itself signed.
A forged image needs a graphics model. A chip signature needs the state’s private key.
- certificates
- 588
- certificates
- countries
- 112
- countries
- network calls
- 0
- network calls
The trust chain is verified fully offline — no network, no CRL, no OCSP. A chip whose issuer is not in the store is refused.