In some sense, the ideas underlying the loT are not new - for example, technologies such as radio-frequency identification (RFID) have long been used by businesses for tracking items. For all the amazing qualities of the film, it fails to provide a convincing vision of today's technology. And it fails in a particular way: when our hero Deckard falls for "Rachael", he already knows that Rachael is a highly intelligent organic robot, so sophisticated that she can hardly be distinguished from a human.