@zhenech wrong! Only if you want to store an RSA key. Give Fido keys a try: https://developers.yubico.com/SSH/Securing_SSH_with_FIDO2.html

@gtz42 Where did I say it's the only option?

@zhenech you did not. All I was trying to say / saying is that Fido2 keys have better UX than GnuPG card. (But they don‘t work with RSA)