Planet Payment, Inc. (NASDAQ:PLPM), a leading provider of international and multi-currency payment processing services, and ACI Worldwide (NASDAQ: ACIW), a leading global provider of real-time electronic payment and banking solutions, today announced the launch of UnionPay International’s SecurePlus, the latest in UnionPay’s solution set, that will now enable the acceptance of UnionPay debit and credit cards online, with several significant enhancements.