Certainly this works, for example this is how any electromagnet works. Skimming the article, it seems they're actually transporting the magnetic field itself, t

Certainly this works, for example this is how any electromagnet works. Skimming the article, it seems they're actually transporting the magnetic field itself, though. For example, you hold a magnet at one end of the pipe, and its field is felt at the other (potentially distant) end. I guess this is roughly analogous to how a wire hooked up to a high-voltage source will produce an electric field on the other end (relative to common ground). The notion is fundamentally different, however, since there are no magnetic monopoles, and so there's no related notion of "magnetic voltage" or "magnetic ground".