Account
An account keeps what you chose, so you can come back to it on another day or another device — and nothing else.
Nothing extra
It stores what you kept. Never your photo.
Hashed, not held
Your password is hashed with scrypt on the server. We never keep the original.
Reversible
Delete the account and everything goes with it.
Google sign-in needs a client ID configured on the server. Until then it will tell you so rather than fail quietly.