Hey ST team, I'm building an enterprise app for low-skilled workers who don't have company email addresses. Eventually we will integrate with another service they use for Single-Signin, but we need an auth method in the mean time. I'm wondering if there is a way to change the email+password recipe to be a username+password recipe? I'm assuming there is just some regex somewhere validating that the input is an email - how can I change this? Also open to other suggestions for 'low-tech' auth methods that are very simple (technology is scary for this user group). Could I also change the password requirements (i.e. doesn't require numbers, symbols, etc.)? It doesn't need to be super secure as the app will only be installed on the companies custom devices which stay on premises.