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?
 
I have yet to install the new door lock cylinder but we did get a locking OBD port cover and a steering lock (like The Club, but not that brand). Unfortunately, the lock mechanism on the new steering wheel lock seized and nothing I tried would free it so I had to cut the darn thing off with a hack saw!
 
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