Imagine we have many tubes that connect our houses, just like electricity wires. these tubes transport atoms from an house to another. these atoms come usually from our trash and house waste. We put them in a container and these atoms are transported to an house to another according to their needs. then these atoms can be used by machine assembler at home to produce the things we need.
I don't know if I explained myself well, but if you understood me, when do you think we will have such technology?