For those not familiar with ATM transactions in Japan, be aware of the need to find an "ATM for foreigners" as described above. But also be aware that many ATMs are not open 24 hours each day. Quite a few ATMs are not available for use after around 9pm. Given the relative lack of crime in Japan, it is the one place where I always carry some cash - typically much more than I feel comfortable carrying back home in New Jersey.