Email and password with a show or hide button, a forgot link, and an error that says what went wrong.
3 states
Authentication
Getting a person in: sign in, sign up with consent, a password reset, a one-time code, and a magic link that needs no password at all.
Name, email, password with its rules, and a required consent checkbox that names the terms.
4 states
One email field and a confirmation that does not reveal whether the address has an account.
4 states
Six boxes that behave as one: paste fills all, Backspace goes back, and autofill works.
4 states
One field. We send a link that signs you in.