Any foreign national wishing to enter Japan must have a valid passport, which, in principle, contains a visa corresponding to his/her purpose of entry into Japan obtained in advance from a Japanese embassy, consulate or other Japanese diplomatic mission abroad (hereinafter, "Japanese diplomatic mission abroad"). Upon landing in Japan, the foreign national must then be screened by, and receive a landing permission stamp from, an immigration officer at the port of entry, who will determine the foreign national's status of residence and period of stay.