If vitalik is interested in IDena technology with proof of humanity, it seems very interesting if etherium will have a partnership with idena for voting systems on blockchain~
Vitalik doesn't specifically mention Idena. Though, he does have some awareness about Idena and talk a little bit about it. Take a look at
https://disqus.com/home/discussion/vitalik-ca/hard_problems_in_cryptocurrency_five_years_later/#comment-4701734342. I know it from the idena FAQ site that created by @realRioda
and maybe in the future IDena will become a pioneer of proof of humanity, for voting on presidential elections of a country, is that possible?
I don't think it would be beneficial to use things like this, it would be overkill. Also, they won't do it for a sovereignty reason, and I don't understand why it should be used PoH, they already have all of our identity.