Vietnamese tourists visiting Korea can conveniently purchase on mobiles at Lotte duty-free stores. Lotte Duty Free has introduced new e-wallet payment services for Vietnamese tourists visiting South Korea. A simple payment service for Vietnamese consumers, the wallet uses QR codes and is common among young shoppers in Vietnam. As of yesterday (29 December), Vietnamese tourists visiting Korea can conveniently purchase on mobiles at Lotte duty-free stores without a separate currency exchange process. Customers using the Sacombank Pay and LienViet24h payment applications, which are operated by local Vietnamese banks can use the e-wallet. The Sacombank Pay and LienViet24h platforms have four million and three million Vietnamese members respectively.