Many passports also contain digitized fingerprint scans. But those are even harder to access. You need a private key that only governments have.
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Still reasonable?
I can unlock my laptop with just a fingerprint. Whether or not we believe this the implementation already exists.
> It's more your name.
I can change my name. Can I change my fingerprints?
> That would be like saying your face is a secret.
I can unlock my phone with my face. Whether or not we believe this the implementation already exists.
> It's not.
Let's discuss the real world and not the ideal fantasy.