Threadjack: my father lives in a 11 story co-op, that has a secured entry at ground level. This building has a "closet" that contains an electrical panel on each floor, for the units on that floor. City or state regulations--or maybe the fire marshal, I don't remember--require that these closets be locked, but that there be a key available at all times for access. The co-op's solution was to install locking knobs on each closet, chain the key to the door, and insert the key into the lock. "There: it's locked, and there's a key available immediately." Seems to be working OK for them.
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