Code key device is not something you plug into a USB. You push a button and it generates a code for manual input.
On websites that require a Mit ID log-in you have options to change to the code device instead. With an app on your phone it requires the Mit ID app to be present, as well as the phone to still have Google's security process running.
Several apps can have the Google security spoofed, but still require the Mit ID app. Mit ID, on the other hand, cannot be spoofed at all.


Ech... I don't use Chromium browsers...