SoloKeys Solo 2

FIDO2 Certification

Certified by the FIDO Alliance as conforming to FIDO2 standards

More Info

Resident Cryptographic Keys

Supports WebAuthn discoverable resident credentials, the building block of passkeys

More Info

Resident ECDSA keys

Supports ECDSA discoverable keys

U2F Authentication

Conforms to the U2F Authenticator and WebAuthn standard

More Info

The Solo 2 is the current SoloKeys flagship, sold in USB-A and USB-C variants for around thirty five United States dollars. It is built on the open source Trussed firmware framework and runs on a microcontroller secure boot path that is fully documented in the SoloKeys repositories.

Solo 2 supports FIDO2 with discoverable credentials and U2F. There is no PIV, no OpenPGP, no OATH, and no biometrics. The key is what its name implies: a single purpose FIDO2 device that you can audit end to end.

For NFC tap to authenticate, see Solo 2+ NFC. A “Hacker” developer variant is also sold for users building or modifying firmware.