My NEO is my backup key. My YubiKey Nano 4 is my main key. I also got 2 Solo, but they only do Fido 2 (not SC) so they're not very useful for me. Though one wil

My NEO is my backup key. My YubiKey Nano 4 is my main key. I also got 2 Solo, but they only do Fido 2 (not SC) so they're not very useful for me. Though one will, once I got my next phone (will have NFC).