A national identification number, national insurance number, or national identity number is used as a means of tracking their permanent residents, citizens, and temporary residents for the purposes of work, taxation, health care, government benefits by the governments of many countries .
The ID number validator provides 28 countries for validating. The countries are Bosnia and Herzegovina, Brazil, Bulgari, Chile, China, Croatia, Czech, Denmark, Estonia, Finland, Iceland, Ireland, Latvia, Lithuania, Macedonia, Montenegro, Netherlands, Poland, Romania, San Marino, Serbia, Slovakia, Slovenia, South Africa, Spain, Sweden, Switzerland, Thailand.