I know a guy who is from Brazil, he was utterly shocked that honesty boxes existed. I doubt they are universal. And they probably require a high trust society.

Hi from Argentina! Is that close enough?

If you put one of these here in Buenos Aires, I expect it to dissapear in an hour.

But a long time ago I went with my wife for a few weeks to a small town in the mountais in the Cordoba(AR) province. We left the bikes unchained an unatended for hours. I expect a honesty box to be possible there. Except during weekends, when it get's full of turists.

Brazilians are shocked that if can leave your bag on the table while you go to the bathroom