With my (relatively) old Ford, the backup key is a small one hidden inside the fob that you can pry out if needed. There are also backup methods to lock the non

With my (relatively) old Ford, the backup key is a small one hidden inside the fob that you can pry out if needed. There are also backup methods to lock the non-driver doors and for the push-button start to work in the case of a dead fob. I'd be very wary of buying a car without those backups.