A passport valid for at least six months and a visa are required for entry. Visas are issued for business and work, to visit close relatives, and for transit and religious visits. Visas for tourism are issued only for approved tour groups following organized itineraries. Airport and seaport visas are not available. All visas require a sponsor, can take several months to process, and must be obtained prior to arrival. In the past, travellers were refused a Saudi visa because their passports reflected travel to Israel or indicated they were born in Israel, although this has not happened recently. Women visitors and residents are required to be met by their sponsor upon arrival. Women traveling alone, who are not met by sponsors, have experienced delays before being allowed to enter the country or to continue on other flights.