Anecdotally on my Hyundai ionic hybrid from 2018 it does have a mechanical key in the fob, but it is very non-obvious. It’s physically the same piece as the keyring section at the top of the fob. There is a small catch you release to remove the key from the plastic fob body and it slides out the top.
All this to say Hyundai certainly knows how to do this. If they didn’t do it, it is almost certainly a deliberate omission.
alt Hacker News
Anecdotally on my Hyundai ionic hybrid from 2018 it does have a mechanical key in the fob, but it is very non-obvious. It’s physically the same piece as the keyring section at the top of the fob. There is a small catch you release to remove the key from the plastic fob body and it slides out the top.
All this to say Hyundai certainly knows how to do this. If they didn’t do it, it is almost certainly a deliberate omission.