Understood and it probably can but I don't want to replace it :) I like OpenPGP (especially the newer revision which supports elliptic curve).
The GPG toolchain is pretty great for file encryption and I use it for my password manager too (which is indeed ZX2C4 Pass - passwordstore.org ). I don't want to use a fork using 'age' because I rely on the GPG version on my mobile (using the excellent OpenKeyChain app and the passwordstore app which talks to that).
Also, I log in to SSH servers I don't have the ability to install stuff on, like the ILO on my servers. And again on mobile, there's bridges to OpenKeyChain for SSH in e.g. Termux which work great including agent forwarding. But not for PIV. So it's not a complete replacement.
Sorry but without OpenPGP it's a non-starter for me. I understand I could use Solokey if I make a lot of changes in my personal setup and make some compromises especially on mobile. But why would I? I can just continue using Yubikey :) Don't forget you're in a heavily contested market, you should be better than the competition.
I'd like to have an open-source authentication key but in the end it's a tool to me. Open-source is a 'nice to have'. It's not worth it to me to deviate too much from my existing workflow.
The GPG toolchain is pretty great for file encryption and I use it for my password manager too (which is indeed ZX2C4 Pass - passwordstore.org ). I don't want to use a fork using 'age' because I rely on the GPG version on my mobile (using the excellent OpenKeyChain app and the passwordstore app which talks to that).
Also, I log in to SSH servers I don't have the ability to install stuff on, like the ILO on my servers. And again on mobile, there's bridges to OpenKeyChain for SSH in e.g. Termux which work great including agent forwarding. But not for PIV. So it's not a complete replacement.
Sorry but without OpenPGP it's a non-starter for me. I understand I could use Solokey if I make a lot of changes in my personal setup and make some compromises especially on mobile. But why would I? I can just continue using Yubikey :) Don't forget you're in a heavily contested market, you should be better than the competition.
I'd like to have an open-source authentication key but in the end it's a tool to me. Open-source is a 'nice to have'. It's not worth it to me to deviate too much from my existing workflow.