The three buttons at this multi-unit dwelling suggest three stages of apartment living. The topmost one is still fairly active. The middle one has been abused to the point where the button is hollowed out, the plastic melted from the heat of a thousand fingertips, from accumulated social pressure; it functions if you nudge it at the edges, but most visitors, to the extent there are any these days, give up and walk away. The bottom button signals plainly that the dweller no longer accepts visitors, and has in fact painted over the button, rendering it useless, and removed the apartment number from public view.
An ongoing series cross-posted from instagram.com/dsqt.