The best rates are obtained at banks (generally open 9 a.m. – 5 p.m.). Better rates are given for traveler’s checks than for cash. Some non-Japanese banks have branches in Tokyo — contact your bank for information. Larger hotels also offer currency exchange service. ATM machines also work (but we’ve found that many international machines only respond to 4-digit PINs) — look for machines that display the symbols found on the back of your card or that allow advances from credit cards.