[Yohanes] bought two, but wondered if he could bring U2F to other microcontrolled devices. he ended up building a U2F key with a Teensy LC, and in the process brought U2F to the unwashed masses.

This form factor comes from a 2-factor authentication device he found on Amazon — he was intrigued but balked at the price. Knowing the components for a minuscule Universal 2nd Factor (U2F ...

This is a demo app for Android which uses an NFC enabled U2F device to register and authenticate to the https://demo.yubico.com/u2f demo service.

so you will need to use a Security Key (FIDO U2F) device. Users will need to connect the stick to a computer upon logging in for identity verification purposes. Then the user must tap a button on the ...

Provides library functionality for communicating with a U2F device over USB. Two executables are provided, u2f-register and u2f-authenticate, which support the register and authenticated commands of ...

This completely limits mobile device connectivity, especially for the USB-A key. The key supports FIDO2 as well as being backward compatible with the original FIDO U2F standard. There's no TOTP ...