In buildings in some cities, entry ways for big buildings often have an emergency access box somewhere near the door. If police or the fire department need to gain entry, they have a master key that will let them access the lockbox and the lockbox will contain keys to the door.
He likely means card readers.
In buildings in some cities, entry ways for big buildings often have an emergency access box somewhere near the door. If police or the fire department need to gain entry, they have a master key that will let them access the lockbox and the lockbox will contain keys to the door.
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