A "Personalausweis" is a national identity card issued to citizens in Germany. It serves as an official proof of identity and includes personal information such as name, date of birth, and address. The card also features a photograph and a unique identification number. The Personalausweis is used for various purposes, including verifying identity when traveling within the European Union and accessing government services. It is an important document for everyday activities, such as opening a bank account or signing contracts, ensuring that individuals can prove their identity in various situations.