This is a universal ID card that every resident of Terezin had to have. It was issued by the so-called "Ältestenrat" which translated means council of elders. It was basically an organ of Jewish self-government. Jews in Terezin had this sort of self-government, but it was completely subordinate to the Nazi command and thus had almost no means of independently influencing the situation in Terezin in any way. Besides the usual personal data like name, date of birth and so on, as you can see, this ID also has information about figure, color of hair, eyes, shape of nose, mouth etc.