$SMME A small square fingerprint sensor sits on the surface of the card that is connected to a circuit board inside the card. On this circuit board are extremely small and very low-profile electronic components that allow the users fingerprint to be scanned and matched in less then a second. On a fingerprint match the cards contact chip and contactless RFID is unlocked allowing the card to then operate at any standard card reader and ATM. https://finance.yahoo.com/news/smartmetric-te...00031.html