To authenticate yourself, you can do it now with zk proof (only yes/not) and selective disclosure. Selective disclosure is also based on zk technology ( A = x)?

Yes, selective disclosure is available at the protocol level, we expect to have it at a product level sooner. With selective disclosure we offer the information and the proof of the information. The verifier gets the field of the information and also a zk proof that the user is presenting to the verifier has a full VCs issued by the issuer. (information and a proof that the information is from a reliable source).