Web3 is the solution to all our problems!... obviously not

But something I've seen is that is making mainstream using private and public keys. We have Client certificates but those are hard to create and use, and not really compatible with mobile.

I think a good workflow will be something similar to connecting to SSH, instead of a static password you sign a challenge with your key pair.

I have a few weeks thinking of replacing the social login (FB, Twt, OAuth) with wallet login https://github.com/amaurym/login-with-metamask-demo