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: ...

A developer has built a remarkably thin computer that is almost the same size and thickness as a standard credit card, potentially opening the door to a new category of ultra-portable computing ...

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 ...

Credit card chips have been in modern cards for a while now, and are a security feature used for authentication, as Mastercard ditched the magnetic stripe completely years ago. But to make it all work ...