SmartMetric, Inc. (OTC: SMME) says that Visa, Mastercard and other payments networks are reported to now have more than 6.7 billion credit cards issued worldwide. The following is the breakdown of cards in circulation per network brand. Visa 3.94B, Mastercard 2.58B, American Express 122M, JCB 144M, Diners Club 66M. 1 EMVco, the international card standards organization governing EMV payments chips used in today’s credit and debit card report more than 11 billion cards with EMV chips have been...