[knowaveragejoe]

I think you both 1) didn't read the article 2) went into the comments assuming it's about cryptocurrency and brought your baggage on that subject with you. The article mentions them in an offhand way, ZKPs are independent of anything cryptocurrency related.

[cyberax]

Can you provide a single example of their actual use outside of cryptocrap?

[knowaveragejoe]

The general takeaway is that you can prove you know something without revealing what it is, or how you know!

If you can't think of the possibilities that unlocks beyond the examples others have already discussed(none of which were crypto related), that's a limitation on your end.

[cyberax]

> The general takeaway is that you can prove you know something without revealing what it is, or how you know!

And? Why is it better than good old PKI?

[knowaveragejoe]

This is in complement to PKI - you still have to divulge what or how you know something with PKI in the examples given.

[cyberax]

And you still have to do that with ZKPs. Otherwise, I can just "borrow" my buddy's license and get into a pub. Unless the ZKP will interface with a biometric authentication system and do something like facial recognition.

And even then, it hand-waves away the issues with revoked licenses. How do you do license revocation with ZKPs?