Portable documentary identifiers date allegedly at least from the days of the Roman Empire.
Compare passport, pass book[?], visa, Social security number.
... is 2.26 and the average family size is 2.91. In the village the population is spread out with 21.7% under the age of 18, 5.1% from 18 to 24, 32.6% from 25 to 44, 31.2% from ...