Nigerian currency is the Naira (NGN), which is divided into 100 kobo. Approved exchange facilities include major hotels and the airport, but official rates are very high. It is illegal to change money on the street. Credit card fraud is a problem, and visitors are advised to exercise caution when using credit cards. Credit card facilities are also limited outside of the major cities. Prior to travel, visitors should ensure they have a variety of currency options available to them (Pounds, US Dollars or Euros) in cash. Travellers should be aware of the prevalence of commercial fraud in Nigeria.