New spare key for 2006 r53 from key fob.
 

I was wondering if the 2007+ key fob key(just the metal part) could be keyed for a spare door key on a 2006? This key won't be used for ignition at all and won't need the chip or anything. It will just be used for if the main key is locked inside. I bought the car and it was missing the plastic key.