OpenSK is a piece of firmware that you can install on a USB dongle of your own, turning it into a usable FIDO or U2F key.
Tag Archives: Security Key
Google goes beyond two-step verification with new USB Security Key
Google’s adding support for a physical USB second factor that will first verify the login site as being a true Google website, not a fake site pretending to be Google, before it hands over a cryptographic signature. 