Login with email ONLY & password. Login & Docker?

Hello Stackideas Team

I am wondering if it is possible to have users login only using there “email”??? ONLY.
Both using the login form here:
https://www.finalbug.net/login-here
And using the Docker App.

This would:

a) Make it easier for them.
b) Could potentially make it easier for me to track things.

i.e. email address would be the Lowest Common Denominator!


thanks

Paul