Folsom, Calif., Sept. 2, 2014 – – MyECheck, Inc. (OTC Pink: MYEC) (PINKSHEETS: MYEC), the leader in electronic check systems for mobile payments, reported that Sionic Mobile, the leading provider of mobile payments, promotions and loyalty rewards, has selected MyECheck’s comprehensive mobile payment platform for back-end services including electronic check processing, fraud prevention and mobile account services.