Mines gonna be custom, no key lock. In the key locks place will be a backup battery. A single AA battery gets 10,000 uses…2 will get 20,000. When the first one dies, a warning beep will go off.
So there won’t be a key lock there. If it did die unexpectedly even having the backup, i would go in through my window. My room mate won’t do this because he is deathly afraid of heights, so I’ll be fine.