CX-5 (possibly) Broken Into

I am going to get into our CX-5 and close the door without the FOB. I'll have my wife walk far enough away and then after a minute or so, I will open the door from the inside. Stay tuned for the result, lol...

One another matter, I now have a new genuine Mazda door lock cylinder to install.

QUESTION: Aside from the driver side door lock handle, what does the hidden key do/unlock?
 
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