Passports just highlight the fact your not free like a bird.
Passport demonstrate the government owns you and you at some-once mercy.
Passports just divide the world and cause friction.
Pass-word, Pass-code, Pass-card, Pass-port..... are all instruments to prevent you from entering freely.
Before world war one no such thing existed and was introduce then.
In modern times facial camera recognition is everywhere.
Mobil phones are needed everywhere banking, navigation, 2fac logins....... so whereabouts is always known 24/7