West Hollywood, Calif., Nov. 14, 2014 – Signature Card Services, the industry’s leading payment processing services provider, announced that it will be the preferred and recommended vendor for QDI, one of the nation’s largest master distributors of wireless and wireline products and services. Through this agreement, Signature Card Services will be providing full support in converting QDI’s extensive roster of stores’ to the new chip card acceptance standard, known as EMV, as well as providing payment processing services.