Smart devices and the latest technological gadgets give us remote control of our homes and our cars - but how safe are they? Reporter Fiona Phillips investigates their hidden dangers and reveals how products designed to make life easier around the home can be hacked. She discovers families whose children are being spied on because their baby monitors are being streamed live online, and meets a couple who had no idea they were being watched, in their own home, by thousands of strangers around the world.