Edit: found it. https://en.wikipedia.org/wiki/USB_dead_drop
Pirate box is mentioned on that page. I forgot about that. I used to carry around an old android phone running pirate box. Sometimes people would connect at a coffee shop and that's how I found out about the band Death Grips
I wanted these to exist so badly, it was a fun and quirky concept, but people kept bashing it online as the stupidest idea ever, and the few dead drops that existed in my city routinely got destroyed.
I also built my own PirateBox too, but the only thing that was ever uploaded to it was a creepshot of me and my PirateBox. Turns out when Public Wi-Fi exists, they're actively ignored.
The dead drop website had a map but I was never anywhere near any. That sucks that people destroyed them. It's a dangerous idea, but a cheap used laptop specifically for it could be fun, but yeah, not enough people would ever do that to make it worthwhile.
I wonder if there’s a Linux distro that includes tools like this. It’s not a bad idea.