If this is true... and if this technology can scale then this is AWESOME!
Resteemed immediatly after reading! :D
And here is another interesting article about it on wired:
https://www.wired.com/story/this-cell-phone-can-make-calls-even-without-a-battery
A large touchscreen would require around 400 milliwatts—over one hundred thousand times as much as power as Talla's phone currently needs.
So this technology has still to get waaay more efficient!
vibration is the key to everything!