Instead, all foreigners in Italy are required by law to have an ID with them at all times. Citizens of EU member countries must be always ready to display an identity document that is legally government-issued in their country. Non-EU residents must have their passport with customs entrance stamp or a residence permit issued by Italian authorities; while all resident/immigrant aliens must have a residence permit (they are otherwise illegal and face deportation), foreigners from certain non-EU countries staying in Italy for a limited amount of time (typically for tourism) may be only required to have their passport with a proper customs stamp.