Carrefour unveils digital wallet, teams up with China UnionPay to develop mobile payment ecosystem — Yicai Global — “Europe’s largest retailer, France-based Carrefour SA, has introduced its own mobile wallet dubbed CarrefourPay and joined hands with China UnionPay, a bankcard provider, to build a mobile payment ecosphere… The cross-industry partnership will see both firms working together in such areas as general payment platforms, membership systems, secure payments, big data analysis and smart retail.”