The unit of currency is the Tunisian Dinar (TND), divided into 1,000 millimes. Banks and some hotels provide foreign exchange. ATMs are found in most towns and at all the tourist resorts; almost all will accept Visa cards and many will also accept Maestro (Switch) cards. Visa, Maestro and MasterCard are accepted for payment in many souvenir shops, upmarket hotels and restaurants, although Visa encounters the least problems. All Tunisian currency must be exchanged before departure.