From the outside, their building looks like just another apartment block, but these new homes in Seoul were built with technology in mind. The control panel on the wall maps out the apartment so Mi Yung can choose which devices to control. The air quality here is important to mother and child and so she pops on the air purifying unit, which could be anywhere in the home, because it gets its instructions from the plug socket. Each flat makes use of the electricity cables to transfer data as well as power. Each appliance has to be compatible with a system called HomeNet, one of a number of competing systems on offer in South Korea. The choice of service also limits what devices Koreans can buy to hook into the system as each appliance needs to be compatible.
Read this article from the BBC