Extend Computer Network to Windows, Doors, Ducts & Ceiling
In networking there is a term called "The Last Mile". This refers to how one routes internet data between communications buildings in a city and individual homes. The answer is typically cable modem or fiber. Yet what is more interesting today is how one routes power and data to the last 10 meters -- out to things like doors, windows, occupancy detectors in ceiling, fans/dampers in ducts.