Permanent Account Number (PAN)

Permanent Account Number (PAN) is unique alphanumeric combination issued to all juristic entities identifiable under the Indian Income Tax Act 1961. It is issued by the Indian Income Tax Department under the auspices of the Central Board for Direct Taxes (CBDT) and is almost equivalent to a national identification number. It also serves as an important ID proof.

http://en.wikipedia.org/wiki/Permanent_account_number

A national identification number or National Identity/Insurance Card number is used by the governments of many countries as a means of tracking their citizens, permanent residents, and temporary residents for the purposes of work, taxation, government benefits, health care, and other governmentally-related functions. Sometimes, the number will appear on an identity card issued by a country.

....In Italy, the fiscal code (Italian: Codice fiscale) is issued to Italians at birth....

http://en.wikipedia.org/wiki/National_identification_number