$SMME SmartMetric’s electronic credit card has an ARM Cortex processor. Up to a Gigabyte and beyond memory. Contact and contactless standard credit card interface for all credit card readers and ATMs. A stable rechargeable battery. Rapid recharge power management system that recharges the cards internal battery when used at standard card reader. While still meeting ISO standard size and thickness for credit cards. https://finance.yahoo.com/news/smartmetric-sa...00008.html