This is actually fairly common in rural areas in America too. Maybe someone sets up a bunch of pumpkins, apples, etc at the end of their driveway (which in rural America can be measured in KM) and a box to put money in.
https://www.google.com/maps/@37.249591,-121.909198,240m/data...
https://www.google.com/maps/uv?hl=en&pb=!1s0x808e340f2c491c5...
Sometimes there will be someone out at their fruit stand, but most of the time it runs on the honor system with a money slot where you pay for your produce.
Even the article mentions it's widespread: "Unmanned stalls with vegetables can be found all over the world. Germany, Norway, the U.S., Australia, Canada, the UK are among the countries where the honor system isn’t any novelty."
It seems to me that such a system makes people show their best. Surely there is a percentage of people who may not act very well, but I believe that there are more good people anyway.