Technology

Tiny credit card computer includes eInk screen and is just 1mm thick — Muxcard is powered by the ESP32-C3 microcontroller

Source

Tom's Hardware

Published

May 10, 2026

TL;DR

AI Generated

A new credit card-sized computer called Muxcard, powered by the ESP32-C3 microcontroller, has been created by krauseler. The device features an ePaper display, NFC, sensors, and a rechargeable LiPo battery, all in a 1mm thick form factor. While the current prototype is fragile, future versions may include enhancements like a more powerful microcontroller and additional features such as USB Type-C and touch button controls. The maker is open to collaboration and envisions various uses for the Muxcard, such as a smart-home dashboard or offline storage for passwords.

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Tiny credit card computer includes eInk screen and is just 1mm thick — Muxcard is powered by the ESP32-C3 microcontroller

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Tiny credit card computer includes eInk screen and is just 1mm thick — Muxcard is powered by the ESP32-C3 microcontroller

TL;DR

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Compromised Mistral AI and TanStack packages may have exposed GitHub, cloud and CI/CD credentials in 'mini Shai Hulud' malware infection — supply-chain campaign spreads across npm and AI developer ecosystems like wildfire

Dell SupportAssist update is crashing PCs with constant blue screens and reboot loops — the boot service built for system recovery is the culprit of unending instability