This project is an actual credit-card-sized ESP32-C3 computer with an e-ink display and NFC. Built as a tiny tinkering demo, ideas include a smart home dashboard, 2FA, or an NFC ticket wallet. Now: ...

Person holding a credit card with the front and EMV chip clearly visible. - Daenin/Shutterstock Credit card chips have been in modern cards for a while now, and are a security feature used for ...

CHICAGO, Illinois -- The chips in credit and debit cards protect consumers from hackers, but the same technology could make you a victim of fraud, the I-Team at our sister station WLS-TV found. The ...

A computer the size of a credit card is nothing new. There have been many single-board computers following the familiar dimensions. [Krauseler]’s credit card computer is different, though.