A personal ID (Personalausweis) is an identification card that EU citizens have.
The Personalausweis is an official government ID. You can use it instead of a passport at the Bürgeramt and the Ausländerbehörde. You can also use a Personalausweis from another EU country.
![German personal identification card (Personalausweis)](https://allaboutberlin.com/images/german-personalausweis.jpg)