Hello,
I have a question about the PIV feature of the NK.
What kind of application/scenario is at the moment providing PIV authentification in comibination with the nitrokey?
What means experimental in the command status?
Like nitropy nk3 piv --experimental change-pin?
And is PIV still Windows only?
Regards. 
T.L.
PIV was never Windows-only, we should clarify that in the documentation. The reason for this line in the docs probably is that the first use case was for Windows users because PIV can integrate with ActiveDirectory. There are some applications that interact with PIV directly and many that support it via PKCS11. I don’t have an exhaustive list. Generally, it can be used for any application that needs to perform cryptographic operations on a smartcard (using one of the supported algorithms).
The --experimental flag means that parts of the API can still be subject to change. As the application has matured since the initial implementation, we can maybe remove the flag soon.
