Unused foreign banknotes and coins brought back home by Japanese travelers as well as leftover yen still in the pockets of departing foreign visitors have become a business opportunity at airports.
Pocket Change Inc's machines accept the US dollar, euro, Chinese yuan, South Korean won or Japanese yen, both bills and coins.
For residents in Japan, e-money includes Rakuten Inc's Edy and Aeon Co's Waon.
The other airports with its machines are New Chitose, Chubu Centrair International, Kansai International and Fukuoka airports, while it also has placed units at hotels and department stores.
