An Alien Registration Card (gaijin toroukushou) is issued by city governments to aliens living in Japan. The card has a picture of the gaijin, the gaijin's name, address, date of birth, place of birth, nationality, and fingerprint.

Foreigners are required to carry their alien registration cards at all times, and must produce them on demand if asked by a police officer. If you want to buy a keitei denwa (mobile phone), you need to show the shopkeeper your card.