When Lee Kuan Yew visited London for the first time after World War II, he was impressed by the fact that it had unattended newspaper stands where people were trusted to take a newspaper and leave money: https://youtu.be/b_6H26fpZp8. As someone from a low trust society, I fully concur with his assessment that this was the mark of a truly “civilized society.”
That said, the UK is becoming lower trust.
Not complaining. It’s a neat concept. And if you have a bunch of crap you want to get rid, it’s a lot of fun to build a big birdhouse looking thing, prop it up on the side walk, and keep it stocked with all the crap you don’t want anymore. This is why I created the Little Free Lumberyard to discard my woodworking offcuts. Seriously considering expanding into e-waste because it works so damn well.
This is the mark of a low-trust society masking its issues with technological band-aids. In high-trust countries, you still pay exclusively with cash at these unattended roadside stands.