[amag]

> Replace the single human-memorable token (SSN) with a unique public/private key pair

There are governments that work on solutions to give each citizen a certificate. What I would love to see would be the possibility to issue your own sub-identities that only exhibit as much information as you want/need to share for that specific use case. E.g. if you need to make $20k/yr for a new mobile phone plan, you can issue an identity that makes $20k/yr as long as you make at least that.

[zimmerfrei]

You have just described IRMA (I Reveal My Attributes) which is an experimental non-profit implementation of a subset of Idemix, a type of ABC (attribute-based credentials) system:

https://privacybydesign.foundation/irma-en/

https://privacybydesign.foundation/irma-explanation/

https://petsymposium.org/2017/papers/hotpets/irma-hotpets.pd...

edit: links