How to have isolated FIDO access in Android 7.x?

I know the generic thread How do I use my Google account when I have a FIDO U2F Key attached?
I would like to limit the access to two modes, such that creating an isolated access if you do not have the FIDO key connected to your phone

• without YubiKey 4c connected, only basic phone capabilities like in Nokia phones


• with YubiKe 4c Connected, all features allowed

I know that there are some custom applications which try to accomplish similar goals etc here.
However, I think the case requires an OS development approach to succeed.
I think the security team and OS development team should target the security tweak in current Android systems where they do not offer by default Android with keys.

Phone: any Android 7.x phone

Android: 7