ATLANTA--(BUSINESS WIRE)--Sionic Mobile, a mobile commerce leader, today announced serial innovator and evangelist of emerging mobile payments and commerce, Spencer White, has joined the company as Chief Operating Officer (COO) and EVP Business Development. With more than 25 years experience, White co-founded Softcard (the AT&T, Verizon and T-Mobile mobile wallet joint venture - formerly Isis) whose technology was recently purchased by Google. Prior to Softcard, White served as Director of