Unused foreign banknotes and coins brought back home by Japanese travelers as well as leftover¹ yen² still in the pockets of departing foreign visitors have become a business opportunity at airports.

日本游客带回国未使用的外币和硬币，以及即将离开日本的外国游客口袋里没花完的日元，近日成为了机场的商机。

A Tokyo-based venture began setting up machines last year allowing travelers to change leftover currency into electronic money or gift vouchers³.

东京一家名为“零钱兑换”的企业于去年开始安装机器，允许游客将没花完的钱换成电子货币或礼券。

Pocket Change Inc's machines accept the US dollar, euro, Chinese yuan, South Korean won or Japanese yen, both bills and coins.

该公司的这些机器可接受美元、欧元、人民币、韩元或日元的纸币和硬币。

For residents in Japan, e-money includes Rakuten Inc's Edy and Aeon⁴ Co's Waon.

日本居民可兑换乐天株式会社和永旺集团等商家的电子货币。

Users can also choose Amazon and other vouchers, or make a charitable donation.

使用者还可选择亚马逊和其他代金券，或进行慈善捐赠。

Installing its first machine at Haneda in February 2017, Pocket Change now has least 15 exchangers in Japan.

“零钱兑换”公司的第一台机器于2017年安装在羽田机场，现在该公司在全日本已经拥有至少15台这种机器。

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.

其他安装该机器的机场是新千岁机场、中部国际机场、关西国际机场和福冈机场，还有一些则在酒店、百货商店当中。