The proposed solution of email auth seems slightly more inconvenient than having a password though which may make it difficult to catch on. However once everyon

The proposed solution of email auth seems slightly more inconvenient than having a password though which may make it difficult to catch on. However once everyone sees the consequences of being hacked maybe they will agree to use it and see it become a standard. The email could also include a one-use code so you could receive the email on your phone and use the code to log in on your friends computer, saving you from having to log in to your email on your friend's computer. An issue that springs to mind though is whether emails are a secure enough to trust with the power to login.