The OP is trying to hide is outside.

 

So why are people suggesting hiding a key inside the car?! That's my exact point.

 

I don't interpret that on anyone's post... please show example.

 

car thieves know all of the good hiding places.

 

See post #13.

 

Point still not taken. Where did I say to hide the key inside the car??

 

I thought I read you suggested putting the battery in the center console as perhaps a means of preventing discharge and inadvertent Smart Key usage or battery drain.

If the battery is in the center console might it restrict the utility of the Smart Key when it is needed to unlock the car? Yes, I suppose the metal key can be extended. At that point aren't we pretty much at the wallet key though?

I understand what the original poster is trying to do. He wants to unlock the car as well as have Smart Key utility without making a key available to a thief , letting a key battery run down or leave it exposed to the elements.

I suppose a well hidden and weather sealed container with a built in Faraday Cage would be ideal.
If it has a small combo lock on it - even better. Fasten it with hardened screws to a frame rail.

I think everyone has convinced me that if I have such a thought the wallet key is the least problematic answer