Our building has 7 condos so this solution is an overkill. Yet, every day we have 4-5 boxes from Amazon laying around in the entrance of the building. Rarely, neighbors pick up the wrong package.
I'd have packages delivered 2-3 times a month. In 2.5 years, not a single package was stolen.
My takeaway from this experience is that most humans are decent people. Or that I live in a sufficiently expensive block that nobody has any desire to steal anyone else's stuff.
The only odd part was the one-time codes with multiple packages. I would get one code for multiple packages, things were difficult to find, and I had trouble coordinating with my wife. I'm glad I don't have to deal with it anymore.