Secure remote device binding
Thanks to the cryptographically secured chain of trust from the issuing government down to the operating system of identity document chips, NFC-based identity verification is the only way to ensure remotely that a document is 100% authentic and untampered.
This means that the face image within the chip is the best basis for biometric facial checks as it cannot be replaced or manipulated without detection.
The combination of NFC-based ReadID and biometric holder verification is the strongest method to securely link users to their device, no matter where or when.