Cnet - Eight months and several hurdles after receiving 510(k) clearance, mobile-health company Mobisante says its smartphone ultrasound device is officially on the market.
Elliptic Labs attracted a lot of attention at CES a couple of years ago when it demonstrated some pretty cool 3D gestural interactions based on ultrasonic wave technology. It allowed users to navigate through apps, control music playback, and answer calls all with the wave of their hand. The company hasn't seen widespread adoption of that technology, at least not yet, but its next application of the same principles could find a more receptive audience: ultrasound proximity sensing.
This can do really well, i can't imagine how could you come up with something like this. I know it's nothing special or ground breaking, but you'd think that "Ultrasound on Cellphone".