A Person of Indian Origin (PIO) is a citizen of any other country but whose ancestors were Indian nationals at least four generations away. A PIO card is issued to PIOs other than Bangladeshi and Pakistani nationals with Indian origins, holding a foreign passport. The government issues a PIO Card to a Person of Indian Origin after verification of his or her origin or ancestry and this card entitles a PIO to enter India without a visa. Spouse of a PIO can also be issued a PIO card though the spouse might not be a PIO. This latter category includes foreign spouses of Indian nationals, regardless of ethnic origin, as long as they were not born in, or ever nationals of, the aforementioned prohibited countries. PIO Cards exempt holders from many restrictions that apply to foreign nationals, such as visa and work permit requirements, along with certain other economic limitations. PIOs can acquire non-agricultural and plantation property in India; can admit children to all educational institutes in India under NRI quota and can apply for various housing schemes of LIC, state governments and other government agencies. They are also exempted from registration at Foreigners Registration office at District Headquarters if stay in India does not exceed 180 days.