UW has a simple prototype for a battery-free mobile phone

[ATCclears]

Battery Free Phone

It's a long ways from being commercialized and they probably cannot solve for the energy requirements of a high-resolution color screen, but it's still interesting!

It reminds me of being a kid. I had one of those Radio Shack electronic-experiment kits. One of the experiments had you build a simple AM radio with no battery. I remember wiring it to the copper water pipe in the basement of the house and it picked up enough background energy from it.

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