I read about creating a ssh key directly on a hardware key like
described Generating a new SSH key and adding it to the ssh-agent - GitHub Enterprise Cloud Docs.
Did anyone successfully run this line
ssh-keygen -t ed25519 -C "email@example.com"
For me this is not working.
You may need to touch your authenticator to authorize key generation.
No FIDO SecurityKeyProvider specified
Key enrollment failed: invalid format
The key is not blinking either.