I have not found anything to prove they are a scam as for me they have done everything they said they wanted to do and that was redesign a machine that would use biometrics to verify a dispense. Other things that are not in my wheelhouse i dont worry about as i know how business is and somethings dont always make it. The one thing that i was impressed with was they dont stop working at building products. My business is building automatic dispensing systems and i take pride in what we build so i know it works.