> They have also looked into capturing some of the energy released as sound waves by humans speaking into their remotes as part of voice commands. This makes m

> They have also looked into capturing some of the energy released as sound waves by humans speaking into their remotes as part of voice commands. This makes me want to dismiss the entire article as crackpot nonsense. Apparently there are [prototype devices made](https://news.mit.edu/2019/converting-wi-fi-signals-electricity-0128 https://news.mit.edu/2019/converting-wi-fi-signals-electrici...) that can capture tens of microwatts of energy from a WiFi signal (though how close it is to the router is anyone's guess), which is maybe enough to trickle charge an ultra-low power device.