Coinspeaker Winklevoss-Backed Flexa Will Participate in Demo Store at the U.S. Largest MallFlexa a payment wallet system running of Winklevoss-backed Gemini cryptocurrency exchange is participating in a demo retail store featuring the latest technological innovation. The store was created by top management firm McKinsey.Winklevoss-Backed Flexa Will Participate in Demo Store at the U.S. Largest Mall
