When the company came out in public, there were enough physics people who said that anyone with knowledge of physics can discredit this on the back of a beermat. And a lot of them did (search Ubeam hoax etc). The due diligence  on the part of the investors is shocking as they were clearly told (as was advertised everywhere when they got their millions) that this would charge your phone at quite a distance (you sitting&#x2F;walking in a room and having your phone charging while doing that).