Through face recognition technology, each person can only generate one node, a private key, and a public key.
- What would prevent a person from creating millions of fake faces?
- A person's face changes over time. How would the facial recognition deal with that?
Face recognition on your mobile phone. You use it every day, and it won't affect your use because of your aging changes, will it
Your idea boils down to using biometric information to generate a private key. This idea has been discussed here before: