This "use a passcode from another device such as my phone" tech mentioned above is just Bluetooth LTE. Every phone and most laptops and desktops in the last decade or so has Bluetooth LTE support. Hardware support is very good.

Passkeys are built on Webauthn (and ultimately sort of synonymous with it) and that has always been the web standard for all physical key support such as Yubikey and is basically the same as it has been for decades when dealing with Passkeys only with updated UX on top. Hardware support here is pretty good, too.