A team of radio engineers on Kickstarter checked out the maths on the energy harvesting and could not see how it would work. As the company claimed "patent pending", a legal term, that can only be used if true, I searched for a patent application in US and Europe, but the application number the company supplied seemed to have only part of the patent number. I repeated asked for photo of prototype but no response. When I asked specific engineering questions such as temperature range of use of device, I was told "normal", a bit vague. There were many other red flags, such as project leader saying he had not even a Linkedin profile, due to previous identity theft. The video "demo" omitted the Bluetooth icon on the phone. They were 3 days away from collecting $545,000. I contacted Kickstarter with others, but got no response from them.