The idea was audacious from the start.
In 2011, Meredith Perry and Nora Dweck took the stage at a high-profile tech conference and demonstrated how you can charge your phone wirelessly by beaming ultrasonic rays at it.
Since then, the company has amassed over $23 million in venture funding to get rid of the power cord altogether.
The only problem? The company likely won’t be able to deliver on the promise, according to some of its former engineers.
Dispatches From The Front 