$SMME SmartMetric has created a dual interface biometric fingerprint activated "dual interface" card that can be easily used across all credit and debit card reader types. Further, the SmartMetric dual interface biometric card allows for multi sourced power and power recharging. When being used contactless by bringing the card into the proximity of a contactless card reader then the SmartMetric card harvests power from the RFID electronic field being emitted from the card reader. This energy is used to power the card’s internal processor used to perform the rapid sub one second biometric fingerprint match. Importantly, not only is the card powered through this wireless energy emission but excess power is harvested wirelessly to recharge the card’s internal battery.

https://finance.yahoo.com/news/smartmetric-bi...c=fin-srch