Hong Kong’s housing authorities will expand the use of smart technologies, such as door sensors, in-home fall detectors and stair climbers, to enhance safety and convenience for elderly residents at public estates as the city’s population ages. Michael Hong Wing-kit, deputy director of housing overseeing estate management, said a pilot scheme to install sensors, which track door activity and send alerts, in public flats with elderly occupants would be expanded to include Tung Wui Estate in Wong...