Recently at Carnegie Mellon University a new way of gathering information has been created, using a $20 budget per meter. Wall++ was created out of a series of materials like painter tape, conductive tape and electrodes, with just these materials a group of young men where able to create an intelligent wall that is basically gesture-sensing touchpad. The Wall++ also can act as antennas, picking up sounds that are close to them and being able to identify what they are, it can also track the appliances that are being used inside a room, for example if the owner turns the lights on, Wall++ is able to detect this. This wall is a new development of the emerging field of smart building and smart city, the idea proposed by Bill Gates that regards building a city that is driven by machine learning and artificial intelligence.
I personally found Wall++ to be fascinating, if at such a simple stage it can already do so much, if it keeps developing into something bigger the future of this technology can be even more impressive. Since machine learning and artificial intelligence keep developing so quickly in this modern time I really think this project will become something much bigger, maybe in a near future we could control our entire home from just a wall.
Sources:https://www.theverge.com/circuitbreaker/2018/4/28/17289976/smart-wall-carnegie-mellon-disney-home
https://www.nbcnews.com/mach/science/new-smart-wall-lets-you-control-your-home-swipes-taps-ncna869006