My memory of this is hazy, but when I was younger Apple had a feature where you could log in with your voice. Really! It would have been either OS 7 or OS 9, probably OS 9. I'm almost positive this is either the phrase you had to say, or at least one of a few options. I don't imagine it was in any way secure, especially compared to the likes of Touch ID or Face ID, but it felt pretty cool at the time.