Propiska

Propiska (Russian: пропи́ска) was both a residency permit and a migration recording tool in the Russian Empire before 1917 and from the 1930s in the Soviet Union. For a state or third-party owned property propiska meant a person was included into contract of renting the place. It was documented in local police (militia) registers and certified with a stamp in internal passports. Residing anywhere without a permit was prohibited.