The era of email/password login is coming to an end. Usually when logging in to the "web2" service, we need to use a username or email address and password. The service can then look up our username or email address in their internal database to see if the corresponding password matches the password we provided. Generate a random key for further authentication, usually stored in a cookie. A new specification EIP-4361: with Ethernet Square Log, hopes to change the way we log web2 services thro...