[psanford]

Fido keys work just fine on linux. There's already a fido authenticator that protects your keys using the system's TPM[0].

[0]: https://github.com/psanford/tpm-fido

[RjQoLCOSwiIKfpm]

Thanks but a Fido device and/or TPM is NOT a solution:

It's precisely why my original comment says "I don't want any locked-down hardware to prevent me from accessing my own keys".

[psanford]

There are software only Fido implementations.