I can see huge problems i educating people to look after their private keys. Imagine how many people would lose their keys and their entire mail archive is unre

I can see huge problems i educating people to look after their private keys. Imagine how many people would lose their keys and their entire mail archive is unreadable. Just this week I had TWO colleagues separately losing their respektive 2FA for github. And they both work in IT, one had saved the recovery codes, but couldn't make them work, the other not. In a time of cloud convenience, people are actually less and less inclined to understand the concept of public key crypto and the importance of backing up private keys. Even if you trust say, apple's icloud keychain (which isn't necessarily a great idea), it still requires access to a trusted device, and it's locked in. So I think the biggest nut to crack is a unified cloud based private key backup that seamlessly integrates with everything from web applications to every OS and then get Microsoft/Apple/Google on board to support it every where. Not easy to pull off.