Zing, a wholly owned subsidiary of HSBC Group, launched a payment app in the UK earlier this year aimed at frequent travelers, personal and professional expatriates and ecommerce buyers who regularly patronize merchants and service providers whose local currency is other than British pound sterling (GBP). The company will soon expand availability of the app, and a companion multi-currency Visa prepaid card, to other countries in Europe. Cardholders in the UK can store 22 different currencies in their Zing wallet and can initiate payments at any Visa merchant worldwide via their card or mobi...