UBeam’s ultrasound wireless charging is real and about to be funded
techcrunch.com
techcrunch.com
You won't hear the sound, so you're depending on it meeting your pain threshold to be warned that something is happening. If it's "merely" 100db or so (a loud drill), you won't feel a thing, and could be exposed for hours without noticing.
These are the lasers of hearing. Without really good studies to back up the safety of this amount of energy, I might just end up avoiding all starbucks.
"How can it be dangerous? Look at the babies!"
I would be less worried about the whole thing if they released a single statement about the safety of their system that doesn't insult the reader's intelligence.
simple examples - can charge phone in my pocket while im moving around? that will require at least 2(3 to be viable) charging stations in the room. What if there are two people in that room? What if I have a cat and would like to keep him sane? what if my phone is in a lower pocked below the desk level? I have to take it out and put on the desk in unobscured spot? why not put it on $10 Qi pad? Charging multiple phones in a starbucks? haha give me a break.
and all the iot talk thrown in? Its typical 'this will change the world, we can do everything' BS startups do when their core technology doesnt work at all. They have a prototype!, just no real world numbers :))
I'm very curious what happens when or if they launch.
[but of course, makes sense, in the end the HiFi Amp is just a pair of H-Bridges anyway, probably quite useful to pump rather low-frequency energy out]
Let's see how it actually performs in a real situation. Of course there might be something (the public) we still don't know about it, that makes it more efficient.