In addition to allowing users to sign in using their Google account, I have just added the ability for users to create a new account, and sign in using any email address. This expands our user base to those who do not have a Gmail address. You simply provide your email address and enter a password of your choice. An email will be sent to your address to confirm your identity. Once confirmed, you will immediately be able to sign in using your email address and password. Also, in case you forget your password in the future, it also allows you to reset your password.

In order to be a useful web app, we will need to keep track of who is using it. With the prevalence of Gmail, my first choice is to integrate my authentication with Google. Users can sign up for an account on Typing Help with their Google account in seconds - without any need to confirm your email or phone number. Obviously, this will not be the only way a user can authenticate in the future, but this is the first of many email providers we will tackle first.