Place this clip just before a door opens in your edit, after a door knocking sound sets up the arrival. Follow it with the unlocked moment itself, then add a bell ding later if the scene moves into a shop or reception area entrance.
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A long recording of metal keys being shaken, jingled and clinked together, lasting about 52 seconds with the rattle rising and falling as the bunch moves. It feels oddly tense and familiar, like standing at a locked door or waiting for someone to finally find the right key.