Posts tagged with “authenticator”

URU Card - the new PCB design

URU Card - the new PCB design

Got a fresh batch of URU Card PCBs, and this time I used them to build a full hard shell case—just by stacking boards together. No 3D printing needed! I also switched to a PCB antenna (zero cost!) and prepped the layout for a future USB interface with the FT260 chip. It’s compact, wallet-friendly, and fully functional.

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URU Card - minimal FIDO2 implementation with Arduino

URU Card - minimal FIDO2 implementation with Arduino

Finally, a working BLE-based FIDO2 authenticator on Arduino! The URU Card project now supports basic credential creation and authentication via ESP32. Still early-stage (with hardcoded keys for now), but it’s enough to pass WebAuthn tests in Windows—and it’s open for everyone to try and build on.

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URU Card - Arduino FIDO2 Authenticator

URU Card - Arduino FIDO2 Authenticator

After a lot of requests to open-source URU Key, I’m starting a new project—URU Card! It’s a wallet-sized, open-source FIDO2 authenticator with an OLED screen, touch keyboard, and ESP32 brain. No biometrics (for now), but secure, DIY-friendly, and easy to build with Arduino libraries. Want to join in?

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WebAuthN on ESP32 development board

WebAuthN on ESP32 development board

After getting FIDO2 working on Android, I gave it a go on the ESP32. Started with Arduino, but switched to ESP-IDF for more control. It’s super stripped-down—only one in-memory credential and a button for user presence—but it works! Got both registration and login running. Video inside!

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