I typed "slums" in Google and looked at resulting numerous images of
slums. I tried to imagine where to place street signs or block number
plaques. Often the walls of shacks are made from a mixture of worn-out
fabric, cardboard, corrugated iron.
Even if street signs are placed on poles, I am afraid these poles will
be stolen and reused for building or improving a shack. At the same time
there are quite a few multi-storey cabins, so just GPS coordinates or
three words are not enough. The address should also contain somehow a
floor number.
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