Samsung’s latest remote turns router radio waves into energy | Engadget (engadget.com)
I didn't know radio frequency (RF) harvesting was a thing. Using otherwise wasted energy from radio waves to recharge batteries seems sort of genius, even if it is "best suited [for] low-power devices such as TV remotes." There's a few of those on the planet (hell, we probably have a dozen lying around), so it's not hard to see the potential impact of this tech.
