The means of communication would include pneumatic mail tubes, telephones, telegraphs, radios, and mechanically composed newspapers. -- Howard P. Segal, The Technological Utopians, in Joseph J. Corn (Ed.), Imagining Tomorrow: History, Technology and The American Future (Cambridge: MIT Press, 1986).
The magnetic interference can also cause problems with NFC performance on the new iPhones, and Apple has now started warning manufacturers in its MFi program with accessories supporting the devices to avoid magnets or metal.
Magnets stick to any metal that contains iron, cobalt or nickel. Iron is found in steel, so steel attracts a magnet and sticks to it. Stainless steel, however, does not attract a magnet. Continue Reading.